Set-up: Find a pull-up bar and assume an underhand shoulder width grip.
Lift: Bracing through your core, lift yourself up until your chin is over the bar, trying to get as high as possible. Cue yourself to pull your chest to the bar to ensure full height. Descend until your elbows are at 90 degrees, and repeat.
Emphasis: Do not swing your body up to the bar. It will change the movement pattern and should functionally be considered a different exercise. While useful in other contexts - swing and momentum are inappropriate here.
Assists: A machine appartus may be used to provide assistance and make the exercise easier. Alternatively a partner may provide assistance, or placing your feet inside elastic bands wrapped around the pullup bar.
Instructions and effects for the Chin Ups - Half exercise 
