Should I prioritize hydration?

Our read is that prioritizing hydration is well supported, with experts emphasizing the critical role of electrolytes alongside fluid intake.

Significant fluid and electrolyte losses can occur during activities like sauna sessions and exercise, necessitating substantial rehydration.

While some experts highlight the benefits of starting the day hydrated and the potential value of elevated pH water, others caution against certain hydration practices and products.

Andrew Huberman suggests consuming 16-32 ounces of water with an electrolyte packet upon waking, during exercise, and potentially a third packet for intense exercise to maintain proper electrolyte levels. He also typically drinks Element first thing in the morning, during and after physical training, and after sauna sessions. Andrew Huberman also notes that starting the day hydrated by consuming a larger percentage of daily water intake earlier in the day enhances performance and prevents sleep disruption.

• 01Andrew Huberman (2x) suggests that elevated pH water may offer value through accelerated absorption and may adjust immune system cell function to reduce inflammation.
• 02Andrew Huberman and Bryan Johnson (3x) note that significant fluid and electrolyte loss can occur during a 20-minute sauna session for a 225lb individual, requiring substantial rehydration.
• 03Andrew Huberman (1x) states that starting the day hydrated by consuming a larger percentage of daily water intake earlier in the day enhances performance and prevents sleep disruption.
• 04Paul Saladino (2x) indicates that sub-optimal hydration status is shown by a urine specific gravity above 1.015, while a specific gravity of 1.020 technically signifies dehydration.
• 05Andrew Huberman (6x) points out that individuals consuming caffeine, exercising, or eating a clean diet may not be getting sufficient electrolytes.
• 06Andrew Huberman (1x) suggests that health-conscious individuals on low-carbohydrate diets or consuming caffeine may benefit from a higher sodium intake.
• 07Andrew Huberman (1x) advises consuming 16-32 ounces of water with an electrolyte packet upon waking, during exercise, and potentially a third packet for intense exercise to help maintain proper electrolyte levels.
• 08Paul Saladino (1x) states that increased fluid intake requires a corresponding increase in electrolyte intake to prevent hyponatremia.
• 09Bryan Johnson (1x) notes that a Gatorade sweat patch can measure sweat rate and sodium content, indicating significant sodium loss in individuals who are not visibly salty sweaters.
• 10Peter Attia (1x) observes that performance testing is not significantly impacted by weight cutting as long as fighters stay within certain fluid shift ranges.
• 11Andrew Huberman (1x) mentions that humans and animals often drink water during meals to counteract osmolites in food.
• 12Peter Attia (1x) suggests that a slight level of dehydration (2% body weight loss) can improve marathon running speed by reducing body weight if performance is not impaired.
• 13Andrew Huberman (1x) states that the rate of gastric emptying is influenced by the calorie content of fluids, with caloric beverages emptying more slowly than water.

Peter Attia (1x) cautions that cutting water during bodybuilding peak week is counterproductive, as muscles are 70% water and fluid restriction removes water proportionally from intracellular and extracellular spaces, leading to a flatter physique. Paul Saladino (1x) warns that drinking pH 8.8 alkaline water or baking soda can make stomach contents less acidic, which is problematic for digestion, nutrient absorption, and may increase the risk of dementia and community-acquired pneumonia. Paul Saladino (1x) also states that high pH alkaline water should be avoided. Andrew Huberman (1x) notes that drinking a large amount of water or fluids has not been shown to improve skin health or hydration status in individuals living a balanced or sedentary life, as skin hydration is largely genetically determined. Paul Saladino (1x) asserts there is no scientific evidence to support the existence or benefits of microclustered or structured water, as shown by X-ray diffraction and light scattering experiments, and considers the concept of 'structured water' and devices that create vortexes to structure water a scam. Paul Saladino (1x) also advises against drinking water from polyethylene plastics shipped on hot trucks for months due to exposure to microplastics and chemicals like BPA and forever chemicals. Paul Saladino (1x) claims that claims about the benefits of alkaline ionized water are not supported by chemistry, as water is not a pH buffer and can be easily neutralized. Paul Saladino (1x) also states that dehydration should be avoided. Paul Saladino (2x) notes that drinking water with a higher concentration of radioactivity than background levels can increase overall radiation exposure. Andrew Huberman (1x) advises individuals with prehypertension or hypertension to exercise caution with sodium intake.

The verdict could change if new evidence emerged demonstrating that the risks associated with electrolyte imbalance during increased fluid intake are negligible, or if the purported benefits of specific hydration practices, such as elevated pH water, were definitively disproven by consistent, repeatable research.