The Chin Up or Pull Up is quite a simple exercise, but it is often not performed well. Here are a few guys doing a maximum chin up test in the gym, and you can see how some do not quite get their chin up over the bar, while another does not straighten their arms. When conducting a chin up fitness test, it is important ot get the subject to perform the exercise correctly so that the results are meaningful and the test can be replicated and improvements noted.
