06/02/2026
There's a hydration mistake that quietly costs soccer players the second half. And it doesn't feel like a mistake when you're making it.
Most players think hydration happens on the sidelines. Drink some water at halftime, sip between subs, call it good.
Research tells a different story. In a study on elite athletes, decision-making was 7% slower BEFORE exercise began in players who arrived dehydrated. The mental cost was already locked in before the first touch. Once the game began and they did drink, performance partially recovered. But the first 15 minutes were already compromised.
Pre-game hydration status predicts in-game drinking behavior and performance more than sweat rate does. The fluid you drink the day before sets the baseline and plays a big role in the fluid you compete with.
Save this for tournament season. Full hydration guide link in my bio.