Inner thigh: do squats. Stand with your feet shoulder width apart, toes outward, and slowly squat 1234 until it is parallel to the floor. Count to 5678 and stand up slowly. Don't raise your heels when squatting, be sure to land and move slowly. Do 15 for each group, and do 3~4 groups every day.

Guiding opinions:

Front thigh: same as above. Because this action can exercise the muscles of the front thigh at the same time. Back of thigh: standing. Kick after doing. Do it slowly, the first grade is eight beats, each group does 15, 3~4 groups a day. Everyone's body flexibility is different, so don't force yourself too much to avoid pulling your muscles.