The Chrome Chinning Bar from the Marcy Bruce Lee Signature of fitness accessories is a highly convenient way to get a home workout, the chin up bar will help you gain muscle in your biceps, back and abdominals. By positioning your hands closer together on the chin up bar your will place more emphasis on the biceps, the wider you position your grip the more and more you work your back muscles and lats imparticular. To work your abs you can perform hanging legs raises, this bodyweights exercise is one of the best available for your midsection.