Muscle groups
Biceps, Shoulders, Trapezius, Forearm, Latissimus, BackDescription
Grab onto the pull up bar with both hands a little wider the shoulder width.Pull yourself up until your chest is even with the bar.
As soon as you get your chest even with the bar take your hands off of the bar clap them together and grab back onto the bar.
Lower yourself down till your arms are almost locked out.