Precision hydration -

 
29029 Starter Pack. Take our free Fuel & Hydration Planner to get a personalised strategy for your 29029 event, including recommendations for which strength PH electrolytes - PH 500, PH 1000 or PH 1500 - are best suited to how you sweat. You can then test out the electrolytes and gels that will be on course during your 29029 Challenge with an .... Suviche

PF 30 Chew. Our energy chews have a high carb to weight ratio, making them a great choice when you need to travel light. Each packet contains 2 chews efficiently delivering 15g of carb each. Our Combo Box lets you try both our mild, neutral “Original” flavour chews and the refreshing Mint & Lemon option. Why choose when you can have both?!29029 Starter Pack. Take our free Fuel & Hydration Planner to get a personalised strategy for your 29029 event, including recommendations for which strength PH electrolytes - PH 500, PH 1000 or PH 1500 - are best suited to how you sweat. You can then test out the electrolytes and gels that will be on course during your 29029 Challenge with an ...Hydration Extras These extras do more than just standing around in the background! 🎬 🥁 (You just keep scrollin', we'll keep the grade-A banter flowin'...) DAY-TO-DAYTube with 10 tabletsHydration and nutrition. Precision Fuel & Hydration generally advocates keeping nutrition and hydration separate by using solid fuels or gels for carbs and using your fluids for hydration. Different methods will work for different athletes though, so the best approach is to find a strategy that works for you.Precision Fuel & Hydration. 7,802 likes · 19 talking about this. We help athletes perform at their best by personalizing their hydration & fueling strategy using our Precision Fuel & Hydration | Christchurch, DorsetGatorade's Gx Sweat Patch is a single-use wearable 'microfluidic' device that estimates your sweat rate (how much fluid you're losing) and how much sodium you're losing in that sweat during workouts. At the time of writing (April 2021), it costs $24.99 for a pack of 2 single use patches and is only available in the US. Precision Fuel & Hydration's electrolyte supplements. Our electrolyte supplements come in three formats, because all athletes and sports are different and so they have different needs. 1. Drink mixes with no artificial ingredients in waterproof, single-serving packets. 2. Their balance is ultimately in the kidney. 3. Feedback to the kidney is from ‘pressure and saltiness’ receptors in the heart, blood vessels, kidneys and brain. 4. Regulation is a finely balanced and complex interplay between several hormones depending on whether water or sodium is less or more. A question often asked by my swimmer and non-swimmer friends alike is “do you even sweat when you swim?”. The short answer is “yes, you do”. Rather than leave the conversation there, it’s worth exploring how you sweat when you’re immersed in water and how you can manage your hydration strategies for pool and open water swimming….Precision Hydration Lite Electrolyte Drink - Multi Strength Effervescent Hydration Tablets - Combats Cramp - Low Calorie, Gluten Free, Vegan/Vegetarian Friendly, NSF (1 Tube, 1500mg/L - Purple Tube) Visit the Precision Hydration Store. 4.4 4.4 out of 5 stars 326 ratings PH 500 is a moderate strength electrolyte drink typically used by athletes with low to moderate sweat/sodium losses. Low in calories/carbs, ideal for fasted-training and LCHF lifestyle. Independently batch tested for a wide range of prohibited substances on the World Anti-Doping Agency (WADA) list. Vegan. Weight / space efficient tubes. More for PRECISION HYDRATION LIMITED (07603756) Registered office address 2 Airfield Way, Unit B6 Biz Space, Christchurch, Dorset, England, BH23 3TS . Company status Active Company type Private limited Company Incorporated on 14 April 2011. Accounts. Next accounts made up to ...While hydration isn't necessarily a complex topic, there's a tendency to oversimplify hydration for exercise in one of two ways: 1. By setting yourself targets - i.e. replacing an arbitrary percentage of your estimated fluid losses or by drinking ‘X’ millilitres (or fl …Two cyclists share their experience of using personalised hydration supplements from Precision Hydration for indoor and outdoor training. They report no side effects, refreshing taste, and improved …Precision Fuel and Hydration - Soft Flask 500ml. $17.49. Sold Out. Precision Fuel and Hydration - Flow Bottle 300. $13.99. Precision Fuel and Hydration offers a range of electrolyte products that allows an athlete to choose the correct sodium levels to match their own sweat concentration. We all know that one size fits all rarely works, two ...We usually end up suggesting an appropriate strength hydration drink ( it’s the "relative concentration" of your drink that’s important) and then make suggestions on the ballpark amount of fluid the athlete is likely to need to drink per hour. This plan is then thoroughly tested in training/race scenarios and adjusted until the athlete has ...Take the Fuel & Hydration Planner. Aim to begin your gut training plan 6-8 weeks before your competition date (possibly even more, if you have the luxury of time). Begin by fueling to whatever level you’re confident won't cause you any GI issues in the first week (start cautiously). Progressively increase the amount of grams of carb consumed ...In the 1980s, Sports Scientist, John Ivy, proposed the idea that glycogen replacement could be enhanced by rapid post-exercise fuelling. At the time, the importance of recovery was known but the role of nutrition in the process had not yet been properly considered. Ivy conducted a study which indicated that the timing of post-exercise fuelling ... The Weight, Urine, Thirst (WUT) System for monitoring hydration status. There are 3 things you can monitor together in the ‘real world’ to give you a good enough estimate of your hydration status: Your body weight. The colour of your pee. Your thirst level. On their own these 3 things can't tell you how hydrated you are as there are factors ... A single 20g serving of Precision Hydration (mixed into 500ml/16oz of water as directed) creates a hypotonic 3% carbohydrate solution. That’s the optimal amount for fluid absorption and less than half the level found in typical isotonic drinks such as Gatorade, Powerade and Lucozade Sport. Each packet of PH 500/1000/1500 delivers just under ...DISCOVER MORE ABOUT PRECISION FUEL & HYDRATION Perform at your best, with Precision Fuel Precision Fuel & Hydration was born in 2011 from founder Andy Blow's personal struggles with cramping, hyponatremia, and other hydration issues during his elite triathlon racing days, despite following conventional hydration advice.He has consistently been considered one of the top athletes in the sport since and has big goals of winning Western States 100, Leadville 100, and UTMB in the coming years with the help of Precision Fuel & Hydration. Hayden discovered PF&H through his coach and PF&H athlete Robbie Britton. His favourite products are the PF 30 Gels, PF 30 Chews ...Precision Hydration Electrolytes 1500 & 1000... Mix of 2 x 1500 & 3 x 1000 PH Tubes. Designed to help you start hydrated (and stay that way once you're sweating, if you're a salty sweater). 5 Pack Mix Bundle. 2 x 1500 Tube Typically used before/after intense exercise; And when... €54.99 *.FREE Fuel & Hydration Plan; Shop; Knowledge Hub; Athletes; Contact us; Subscribe; Get performance advice emails; Get advice. Click to select country. Cart. Bottles, Flasks and Cups. Awesome vessels to mix your electrolytes up in . PF&H Bottles. £3.99. 500ml Soft Flask. £9.99. Flow Bottles. £4.99.Drink 1 x PH 1500 with ~500ml (16oz) of water about 90 minutes before you start. Finish your drink at least 45 minutes before you start to give your body time to fully absorb what it needs and pee out any excess. Drink the PH 1500 in water you’d have drank anyway to ensure you don’t overdo it. The circa symbol (~) before the fluid total is ... Sports Hydration: A Sample Plan. Here’s a guideline of what you should drink for every 20 minutes of sports play: Adults: 6 to 12 ounces. Teens (age 13 to 18): 11 to 16 ounces. Kids (age 9 to 12): 3 to 8 ounces. As far as what to drink before, during and after your practice, workout, game or tournament, Nairn recommends: Hydration Extras These extras do more than just standing around in the background! 🎬 🥁 (You just keep scrollin', we'll keep the grade-A banter flowin'...) DAY-TO-DAY Leon was introduced to Precision Fuel & Hydration by friend and fellow triathlete Mark Threlfall, just as PF&H were embarking on their fueling journey. Leon is quite a salty sweater, so uses a winning combo of PH 1500 and PF 30 in training and races. How hydration can help prevent a stitch It's thought that maintaining blood plasma volume via optimal hydration may help this reduction in blood flow and go some way to preventing ETAP. For those who suffer chronically with a stitch, you may want to try preloading with PH 1500 before your next event or big training session if you haven't tried it before.Alongside pacing, foot care and energy intake, hydration is one of the most important factors for success at the Southern Lakes Ultra. Luckily, it’s something you can get ahead of before you arrive at the start line, simply by gaining a better understanding of the issues you’re likely to face and by having a plan for how you’ll manage them.It was his own struggles with cramp that led to him specialising in hydration and founding Precision Fuel & Hydration. More articles by Andy Blow. Precision Fuel & Hydration and its employees and representatives are not medical professionals, do not hold any type of medical licenses or certifications and do not practice medicine.A single 20g serving of Precision Hydration (mixed into 500ml/16oz of water as directed) creates a hypotonic 3% carbohydrate solution. That’s the optimal amount for fluid absorption and less than half the level found in typical isotonic drinks such as Gatorade, Powerade and Lucozade Sport. Each packet of PH 500/1000/1500 delivers just under ... Quantity (15 capsules per box) 5 boxes. £6.99. ( 656) In stock at our US warehouse, available for delivery. Add to cart. Subscribe & save. Shipping. 🕒 Orders placed before 3pm GMT Mon-Fri despatched same day, exc. bank hols. Precision Hydration + Follow. Home; What athletes say; Strength Selector; All-Natural Drink Mixes; Low calorie effervescent tablets; Blister-packed salt capsules; 1500mg/l Hypotonic Sports Drinks; 1000mg/l Hypotonic Sports Drinks; 500mg/l Hypotonic Sports Drinks; Bottles / Cups; More; Cancel.PH 500 is a moderate strength electrolyte drink typically used by athletes with low to moderate sweat/sodium losses. Informed Sport certified. Mixes up to deliver a 3% carbohydrate solution. Vegan. No Artificial Ingredients. Convenient, waterproof single-serving packets. Hypotonic formula enhances the absorption of water during exercise.Start Hydrated. Our low calorie effervescent electrolyte tablets come in different strengths to match how YOU sweat. PH 1500 is our strongest electrolyte drink and it is typically used by athletes aiming to start well hydrated and recover faster after intense exercise. It is also used during exercise by heavy/salty sweaters.In the 1980s, Sports Scientist, John Ivy, proposed the idea that glycogen replacement could be enhanced by rapid post-exercise fuelling. At the time, the importance of recovery was known but the role of nutrition in the process had not yet been properly considered. Ivy conducted a study which indicated that the timing of post-exercise fuelling ...Patch testing. Exercise testing using adhesive, absorbent patches stuck to various sites on the body is probably the most common type of sweat testing used with athletes. Small patches are stuck to the skin and left on during exercise, with sweat soaking into the material as the athlete perspires. These patches are then removed and the sweat ...Precision Fuel & Hydration works with athletes across a range of sports, including pro cycling, providing support through Sweat Tests, fuel and electrolytes, and race strategies …Precision Hydration PF 90 Gels pack a whopping 90g of carbs into each little baby-food-like pouch. The gels, also titled 'the jumbo gel' by the manufacturer, are made with long-duration (over 60 minutes) exercise in mind, with a simple ingredients list, and I found them easy to consume because of their neutral taste.Contact Details: Precision Fuel & Hydration (Jonny Tye/Andy Blow) Address: Precision Fuel & Hydration BizSpace Christchurch Aerodrome Studios, Unit B6 Dorset United Kingdom BH23 3TS. Telephone: 01273 900277 Email: [email protected] Web: precisionhydration.comPH 500 is a moderate strength electrolyte drink typically used by athletes with low to moderate sweat/sodium losses. Informed Sport certified. Mixes up to deliver a 3% carbohydrate solution. Vegan. No Artificial Ingredients. Convenient, waterproof single-serving packets. Hypotonic formula enhances the absorption of water during exercise.Tube with 10 tablets "Precision Fuel & Hydration's advice and products have been unbelieveably helpful in my successful move up the distances. " Sam Appleton. 16x IRONMAN 70.3 Champion. Precision Fuel & Hydration and its employees and representatives are not medical professionals, do not hold any type of medical licenses or certifications and do not practice medicine. The information and advice which Precision Fuel & Hydration provides is not medical advice.Packaged in a waterproof blister pack, each pack contains 15 capsules and has been formulated to aid fluid absorption while being gentle on the stomach. Fast Facts. - Contains 250mg of sodium. - Waterproof blister pack. - Contains 15 capsules per pack. - Batch tested. - Vegan. Hydrate yourself with Precision Fuel & Hydration Electrolyte Salt ...While hydration isn't necessarily a complex topic, there's a tendency to oversimplify hydration for exercise in one of two ways: 1. By setting yourself targets - i.e. replacing an arbitrary percentage of your estimated fluid losses or by drinking ‘X’ millilitres (or fl … How humidity affects hydration, endurance and performance. Conditions can be brutal when there's high humidity and temperatures, so Precision Fuel & Hydration's Andy Blow has looked at how you can best prepare for such environments. 10 MINUTE READ. Hydration. PF 90 Gel. Drink Mixes. Affectionately known as the “Jumbo Gel”, w e put 3 servings of our popular PF 30 Gel in a pouch with a resealable cap to create a more efficient way for you to hit your numbers. It’s the same mild-tasting gel, but delivered in a …Shop for Coached-approved hydration and fuelling products, recovery tools, and Coached merch. Skip to content Shop FAQ Log in. Search. Shop; FAQ; Search. Log in Cart. Item added to your cart. Check out. Continue shopping. Precision Hydration Favourites. PH 1500 low-calorie tablets PH 1500 low -calorie tablets Regular price From $19 ...Drink a stronger electrolyte drink the night before the race to boost your blood plasma volume. Aim for drinks containing >1,000mg of sodium per litre, like our PH 1500 supplement. Drink another bottle of stronger electrolyte drink about 90 mins before you start to top-up your blood plasma volume.Share. 382 views 1 year ago BRUNSWICK. In this video I will give you my opinion on electrolytes. How I used them, which brands I have tried and which ones work …Camille's hydration & fueling plans to help you refine your own strategy We help athletes personalize their hydration and fueling strategies so they can perform at their best. Know your numbers with our free online Sweat Test and Quick Carb Calculator, then make it easy to hit them with our multi-strength range of electrolyte and energy products Precision Fuel & Hydration. For athletes & healthy individuals, individualised hydration. Taking the guess work out of the replenishment of electrolytes. PH 1500 is a very strong electrolyte drink designed to help you start hydrated (and stay that way once you're sweating, if you're a heavy/salty sweater). PH 1000 is a strong electrolyte drink ... Very happy with the gels, electrolyte tablets and chews. Recently used them to fuel a 100-mile bike ride and finished still feeling fresh. PH 250 is a low strength electrolyte drink designed to help you stay hydrated day-to-day. Dissolve 1 tablet in 500ml of water. 29029 Starter Pack. Take our free Fuel & Hydration Planner to get a personalised strategy for your 29029 event, including recommendations for which strength PH electrolytes - PH 500, PH 1000 or PH 1500 - are best suited to how you sweat. You can then test out the electrolytes and gels that will be on course during your 29029 Challenge with an ... The science of hydration. Why is it so important to personalise your hydration strategy? Why is sodium crucial to performing at your best? How can I tell if I'm dehydrated? What is Hyponatremia and how can you avoid it? Can you overdose on Precision Hydration (or other sports drinks)? Two cyclists share their experience of using personalised hydration supplements from Precision Hydration for indoor and outdoor training. They report no side effects, refreshing taste, and improved …It was his own struggles with cramp that led to him specialising in hydration and founding Precision Fuel & Hydration. More articles by Andy Blow. Precision Fuel & Hydration and its employees and representatives are not medical professionals, do not hold any type of medical licenses or certifications and do not practice medicine.Precision Hydration explain how they test individuals' sweat composition & how their H2Pro Hydrate products take all the guess work out of electrolyte hydrat...World’s shortest elevator pitch: “We individualize hydration strategies and fueling plans for athletes to help them get the best out of their performance.” Company: Precision Hydration, Inc. Location: … Precision Hydration Electrolyte Drink Mix- All Natural Multi Strength Electrolyte Powders - Combats Cramp - Gluten Free, Hypotonic (1 Box (8 Packets), 1500mg/l - Purple Packet) $13.99 $ 13 . 99 ($2.50/Ounce) Precision Fuel & Hydration offers a range of electrolyte and energy products for different sweat rates and activities. Find out your personalized plan, shop online, and get tips and advice on hydration and nutrition. He has consistently been considered one of the top athletes in the sport since and has big goals of winning Western States 100, Leadville 100, and UTMB in the coming years with the help of Precision Fuel & Hydration. Hayden discovered PF&H through his coach and PF&H athlete Robbie Britton. His favourite products are the PF 30 Gels, PF 30 Chews ...While hydration isn't necessarily a complex topic, there's a tendency to oversimplify hydration for exercise in one of two ways: 1. By setting yourself targets - i.e. replacing an arbitrary percentage of your estimated fluid losses or by drinking ‘X’ millilitres (or fl …Jason Hervey. Certified Triathlon Coach @ TRI-TRAIN. Email Jason at [email protected] or call him on 416 831-8704. I set up a Sweat Test Centre in Toronto and GTA to help athletes (triathletes, cyclists, ultra-runners, tennis pros) stay hydrated when they're sweating.Shop for Coached-approved hydration and fuelling products, recovery tools, and Coached merch. Skip to content Shop FAQ Log in. Search. Shop; FAQ; Search. Log in Cart. Item added to your cart. Check out. Continue shopping. Precision Hydration Favourites. PH 1500 low-calorie tablets PH 1500 low -calorie tablets Regular price From $19 ... PF&H Bottles. Every time we see someone mixing up PH in a G@t*rade bottle, we die a little inside. So please, drink responsibly, represent Team PF&H with one of our epic bottles. Size (See size guide in image carousel) £3.99. In stock at our US warehouse, available for delivery. Add to cart. It’s called the Fuel & Hydration Planner and it’s designed to help you quickly work out how much carbohydrate (the primary fuel source when it comes to endurance exercise ), sodium and fluid you need per hour in different scenarios. Image Credit: Dave Blow ©. We’ve written a full piece on why understanding how much fuel you need should ... Your Castle Race Series Taster Pack contains... 1 tube of PH 1000 electrolyte tablets, the on-course electrolyte drink that'll help you stay hydrated during the race. 4 x PF 30 Gels. The most efficient way to get 30g of carbohydrate into your system fast. 1 x 500ml bottle to mix your drinks up in as you train for your event.Stay Hydrated. Our low-calorie electrolyte tablets come in different strengths to match how YOU sweat. PH 1000 is a strong electrolyte drink typically used by athletes with moderate to high sweat/sodium losses and those exercising in hotter/humid conditions. Low in calories/carbs, ideal for fasted-training and LCHF lifestyle.You simply mix a sachet of the powder into 500mL of water and gradually drink to thirst. This powder to water ratio is ideal for soft flasks and I found the flavours to be really nice and easy to consume. As for the results, I didn’t experience any stomach issues or cramping throughout. At no point was there any flavour fatigue, which can ... Sam Appleton. 16x IRONMAN 70.3 Champion. Great. No regrets. Goes well in my running jackets pocket even when full. Changed game for my long runs since I hate running with back pack. Our lightweight, portable soft flask is ideal for trail running and swimrun. Precision Hydration PF 90 Gels pack a whopping 90g of carbs into each little baby-food-like pouch. The gels, also titled 'the jumbo gel' by the manufacturer, are made with long-duration (over 60 minutes) exercise in mind, with a simple ingredients list, and I found them easy to consume because of their neutral taste.Carbohydrates can be split broadly into three groups: sugars, starches and fibre. Sugars are simple, single or short-chained carbohydrates, whereas starches and fibre are longer, more complex molecules. When you ingest sugars and starches (but not fibre), you’re providing your body with energy. Simple sugars.VERDICT: 9. 10. Good levels of carbs and electrolytes to keep you both hydrated and energised. High electrolyte content. Mild and …Precision Hydration PF 90 Gels pack a whopping 90g of carbs into each little baby-food-like pouch. The gels, also titled 'the jumbo gel' by the manufacturer, are made with long-duration (over 60 minutes) exercise in mind, with a simple ingredients list, and I found them easy to consume because of their neutral taste.Two cyclists share their experience of using personalised hydration supplements from Precision Hydration for indoor and outdoor training. They report no side effects, refreshing taste, and improved …We battled hard to earn a goalless draw against Manchester City and avoid defeat at the Etihad Stadium for the first time since 2016, and you can see the best …PF&H Bottles. $5.99. VEGAN. HYPOTONIC FORMULA. Ideal sports hydration drink for athletes with moderate to low sweat rates and those not losing a lot of sodium in their sweat. Hypotonic formula for fast absorption. Choose between all-natural drink mixes and zero-cal effervescent tablets!Precision Hydration products were recommended to me so I tried them out. Great advice on nutrition and hydration strategies, and excellent products, really working for me. MIKE CYCLIST. 3/3/2024. Hydration and chew. Excellent customer service, everything I ordered arrived when it was supposed to and I appreciated the hand written thank you. The science of hydration. Why is it so important to personalise your hydration strategy? Why is sodium crucial to performing at your best? How can I tell if I'm dehydrated? What is Hyponatremia and how can you avoid it? Can you overdose on Precision Hydration (or other sports drinks)?

Sodium plays an important role in hydration and performance, so understanding your own losses is crucial if you want to perform at your best. Precision Hydration help all three of Team dsm-firmenich PostNL’s programs understand their riders’ individual hydration needs, this means the team can optimize their hydration strategies during training and …. Vs club

precision hydration

The Precision Hydration PH 500 is a lower-calorie electrolyte supplement for athletes who don’t sweat as much or aren’t working out in as inclement of weather. It contains 500mg of sodium, 260mg of potassium, 40mg of calcium, and 20mg of magnesium per 32 oz. It is usually used before or after exercise and for recovery.Contact Details: Precision Fuel & Hydration (Jonny Tye/Andy Blow) Address: Precision Fuel & Hydration BizSpace Christchurch Aerodrome Studios, Unit B6 Dorset United Kingdom BH23 3TS. Telephone: 01273 900277 Email: [email protected] Web: precisionhydration.comThe Precision Hydration Advanced Sweat Test takes about 45 minutes and all you have to do is sit comfortably while we talk to you about how you train and compete. The test is simple, painless, and extremely accurate.Athletes significantly passing the 2-hour mark can benefit from higher intakes of 60 to 90 grams of carbohydrate per hour, as long as the amount consumed doesn’t cause stomach problems. As a result, it’s common to see faster competitors in long races tend to have the highest carbohydrate intake rates too.When I went to see the guys from Precision Hydration it was partway through my New York marathon training. The hydration plan they gave me recommended using the 250 on a day to day basis, the 1000 for training and racing and the 1500 for pre-loading and recovery. I found the 1500 a little strong for my stomach, so I revised this down a bit. Hydration Tablets. Low-cal electrolytes for when you want to ‘uncouple’ your fuel intake from your hydration to help avoid ‘derailing’ your race if you need one but not the other. (Dropped a bit of locomotive lingo for the trainspotters out there... 🚂) VERY HIGH STRENGTH. 10 TABLETS. This is a major reason why Precision Fuel & Hydration drinks are all hypotonic as the focus is on hydration. Their main aim is to help replace the fluids (and electrolytes) lost in your sweat, not to provide large amounts of carbohydrate energy that are better taken from more solid sources of food/fuel as required. 2. Their balance is ultimately in the kidney. 3. Feedback to the kidney is from ‘pressure and saltiness’ receptors in the heart, blood vessels, kidneys and brain. 4. Regulation is a finely balanced and complex interplay between several hormones depending on whether water or sodium is less or more. Precision Hydration Electrolyte Drink Mix- All Natural Multi Strength Electrolyte Powders - Combats Cramp - Gluten Free, Hypotonic (1 Box (8 Packets), 1500mg/l - Purple Packet) $13.99 $ 13 . 99 ($2.50/Ounce) He has consistently been considered one of the top athletes in the sport since and has big goals of winning Western States 100, Leadville 100, and UTMB in the coming years with the help of Precision Fuel & Hydration. Hayden discovered PF&H through his coach and PF&H athlete Robbie Britton. His favourite products are the PF 30 Gels, PF 30 Chews ...Camille's hydration & fueling plans to help you refine your own strategyPrecision Fuel & Hydration / Precision Hydration 1500 all-natural drink mixes. Precision Hydration 1500 all-natural drink mixes. Be the first to review this product. 8 waterproof drink mix packets per box. 2x more sodium than regular sports drink - because everyone loses a different amount of sodium in their sweat. The average athlete loses ~950mg/l, so this strength is ideal for staying hydrated when sweating. Hypotonic formula for fast absorption. Choose between artificial ingredient-free drink mixes and zero-cal tablets! The recommended caffeine dosage for performance during events lasting 3-5 hours is ~3-6 milligrams per kilogram (1.4-2.7mg per lb) of bodyweight, which includes the pre-caffeination dose you take in the 60 minutes before exercise. So, the appropriate range for a 70kg (150lb) athlete would be in the region of ~200-400mg.When we look at fatal (or near-fatal) instances of dehydration which occurred in milder environmental conditions, it does seem that the human body might take a bit longer to succumb to death. Reports of terminally ill patients committing suicide by voluntary dehydration suggest around 10 days will do it..

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