Water Helps Energize Muscles. Cells that don’t maintain their balance of fluids and electrolytes shrivel, which can result in muscle fatigue. “When muscle cells don’t have adequate fluids, they don’t work as well and performance can suffer,” Drinking enough fluids is important when exercising.
Anyone looking to lose weight could be helped by upping their water intake. Studies have found that when participants drink water before a meal, they lose weight faster than those who did not drink water . Extra H2O helps us eat less by making us feel full, and it may also boost metabolism. CamelBak hydration advisor Kate Geagan, RD says it’s not uncommon to put on weight by mistaking thirst for hunger, and she offers this pro tip: Next time you feel fatigued or sluggish, “drinking water may be just what [you] need to perk up.”
It helps endurance athletes fight fatigue.
Water is an integral part of most any workout, and it becomes especially important in order to prevent dehydration during long workouts. When exercising for an hour or more, drinking water treated with carbohydrates and salts (by mixing in tablets such as Nuun, or making a DIY version) can help maintain fluid balance, which aids athletic performance and helps prevent post-exercise fatigue and exhaustion