Lie flat on the yoga mat or on the bed. Do 30 leg lifts alternately on your back and lift your legs sideways. This is mainly the inside of the thin thigh. Elbows support the upper body and legs are straight and tight. Lift your legs when you exercise, and don't put them down completely when you fall. There are 30 in each group, and this action can be replaced by a stretching feeling on the inner thigh. Keep this feeling, insist on doing 3 groups, and the leg lines can be improved obviously after a period of time.