Whether you’re an elite athlete or a weekend warrior, drinking water during exercise is essential.  By Gina Shaw When trainer Amanda Carlson did a study on college football players preparing for a major NFL scouting event, she found that 98% of them were dehydrated at the beginning of their morning evaluation. “Your ability to perform athletically can decline with a very small amount of dehydration,” says Carlson, director of performance nutrition for Athletes’ Performance, which trains many of the world’s top athletes. “Just losing 2% of your body weight in fluid can decrease performance by up to 25%.” Whether you’re an elite […]