Chin Up works your Biceps. Chin Up can be performed at your gym and it is advisable to carry this out under the supervision of a trainer. Watch the video to know how to perform the Chin Up.
The movement begins with the arms extended above the head, gripping a fixed chin-up bar  with a supinated grip (palms facing the exerciser). The body is pulled up until the bar approaches or touches the upper chest. The body is then lowered until the arms are straight, and the exercise is generally repeated.
: Upper Back, Biceps, Front Shoulder
– none currently
– Vary the width of your grip while performing the chin up
– Vary the thickness of the grip: wrap a towel around the chin up bar. It will help to target the forearms better.