I'm 76 yrs old and I thought my days working out were over due to joint pain. Well I'm happy to report that those days are over ! The versatility of the chest expander allows me to exercise my entire upper body without a problem. For the lower body I simply use bodyweight squats . The key to the comfort of the chest expander is its unique ability to mimic the human muscle-functional characteristics . I would recommend purchasing at least two or three units for maximum convenience. (submitted by Monkey Bar Gym on 11/13/10)