Your body needs fuel and fluids to perform, recover and stay healthy. Carbohydrates give working muscles their energy, protein helps muscles grow and repair, and a variety of other foods supply the vitamins and minerals that keep you well. Staying hydrated matters just as much, so drink regularly before, during and after exercise. Eating the right foods at the right time, including something within the first hour after training or a match, helps you refuel and be ready for the next session.