This is video of one set from the first day of my Support Press training, which is Step One of the Press Flag progression from "Convict Conditioning 2" by Paul "Coach" Wade. With the Support Press, you start out using a wide grip and gradually move the hand on the vertical bar closer to the horizontal bar. I am starting out with 5 second sets and working up to 10 seconds before moving the grip in closer. Once you can hold the close grip for 10 seconds, it's on to Step Two.
Check out more "Convict Conditioning" products, as well as other great Bodyweight training tools HERE!