Soccer, basketball, and tennis all need you to sprint, leap, and push off your calf muscles in order to accelerate or change direction rapidly. This requires strong muscle tissue that can handle intense activity. When sitting at a desk, the best calf exercise is probably standing up and sitting down. This works your entire leg, from your knee to your foot, giving your muscles a real workout. Calves play an important role in balancing our bodies, so it's vital that you keep them strong and healthy. Regular exercise will help your calves grow stronger and protect them against injury.