Exercise No. 9.—Reclining on back, with both hands, grasp some object back of head; now, holding the knees rigid, raise both feet to a vertical position. This exercise is rather severe at first. It should be repeated several times. It exercises the abdominal and hip muscles.
Exercise No. 10.—Reclining on stomach, raise left leg, with knee straight, as high as possible; same with right. Repeat these exercises several times. This exercise is tiring at first. It limbers up the joints. For a person who has been accustomed to inactivity, as in the case of bedridden invalids, this is a valuable exercise.