1. Sit your left leg on your right leg, massage your left ankle with your right hand 15 seconds, and press your left elbow outward on your left knee. This action is mainly to massage the legs in a relaxed way. Change your left leg. One group repeats this action. Each action is repeated 10 times.

2. straighten your legs into a figure of eight, sit flat on the ground and hook up your toes. Grab your toes with both hands, lean forward and press down. The action lasts 10 second, and it is repeated 15 times.

3. Sit in a chair with your feet on the ground, your thighs and calves at 90 degrees, and your feet are aligned. You can put a book or a piece of paper between your knees and move your thighs left and right to help tighten your calves. 10 times, repeated 20 times in a group.

4. Sit in a chair with your feet on the ground, your thighs and calves at 90 degrees, and your feet are aligned. You can put a book or a piece of paper between your knees and move your thighs left and right to help tighten your calves. 10 times, repeated 20 times in a group.