You can not bear the weight first, then slowly tie sandbags or put heavier things on your calves. Sit in a chair, straighten your calves as far as possible, and try to keep a 90-degree angle with your upper body. Straightening the calf means inhaling, and lowering it means exhaling. Although simple, it will be very effective, and it will also be very effective. You can also lift your heels, stand on tiptoe, lift your heels, and lift your body hard. Can be done in a team. The methods of Olympic athletes to exercise calf muscles. There are also leapfrog and rope skipping (feet jumping on the mat can exercise calf muscles best).