With your arms extended and more than shoulder-width apart, lean up against a crossbar at mid chest level. You should be at a 45 degree angle roughly. This is your starting position.
Lower yourself down to the bar until your chest almost touches it. Then, push and raise your body up again to the original starting position. Repeat this movement for the desired or prescribed number of repetitions.
DO
DON'T
Perform this exercise in a smooth and fluid motion
Don't lock out your arms at the top of the movement
SPECIAL NOTES & LEVEL of DIFFICULTY VARIATIONS
To increase the level of difficulty, slow down the movement.