I feel that Li is lying on the bed with his hands behind his head, his legs bent and his knees slowly raised. Straighten his left leg first, then retract it, then straighten his right leg. Repeat this action 50 times, and if you can do it longer, continue to insist. This can exercise the leg muscles, make the leg lines more stylish, and remove the leg fat to make the legs firmer. . Zhejiang(Province)