I love those sports drink ads where all the athletes are in the heat of battle, they’re sweating so much they can barely see – on the verge of scoring that final precious point. But do you really need that sports drink to win the game and keep dehydration at bay?
Carbohydrates are fuel for metabolism. Chemical reactions in cells require fuel. Muscles, from heart to digestive system to biceps and quads all use carbohydrate, in the form of glucose. Brain cells need twice the energy as other cells. The brain runs almost exclusively on glucose, using up about 20 percent of your daily calorie needs.