Definition
The full breakdown. What it is, why it matters, how to use it.
Water makes up ~60% of body weight and is critical for temperature regulation, nutrient transport, joint lubrication, and muscle contraction. Dehydration of just 2% body weight impairs strength, endurance, and cognitive function. Aim for half your bodyweight in ounces daily, plus extra around training and in hot climates.
Q & A
Real Questions
Question 01
Does coffee dehydrate you?
Not significantly — coffee counts toward daily fluid intake. The diuretic effect is mild and offset by the water content.
Question 02
Should I drink water during training?
Yes. Sip 500ml–1L during a 60–90 minute session, more in heat. Pre-hydrate 500ml in the hour before training.
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