When you first start chin up exercises you may not be able to do it. Don't worry about it. Get a chair and assist your chin ups with your legs. Very soon you will be able to do a chin up by yourself. Each time you work out do as many as possible. For upper body conditioning, the chin up bar produces exceptional results, is inexpensive, easy to install. There are several excellent upperbody exercises that can be done on the chin up bar. Chin ups are an excellent way to improve upper body strength.