! Please Read All ! You can do: girl push-ups( instead of your toes use your knees); Leaning on the wall w/both arms, bending them timing yourself to see how long you can hold it or do push-ups on those;Sit on the ground put your legs out angle your body backwards and support your self w/your arms bend or lift stay in desired position, or until stress is felt, time yourself. For sit up replacements: Lay out-stretched on your stomach try and lift your head, arms, legs and if possible chest off the ground, time yourself. Sit down on the ground legs outstretched, try and recline at an angle arms finding a point where you feel stress, time yourself. Also to really help with your leg muscles and abs lay down outstretched, hands on ground at a 45 degree angle, lift both or one leg at a time, head stays down, time yourself. Remember to stretch too, only working on your muscles can make them stiff and uncomfortable. Sorry for the length...I couldn't show you myself. P.S. Set a goal for yourself say 10,20,30, seconds on the timed excises lengthen when necessary.