Directions
Sit on the edge of a chair or bench. Fingers facing forward and legs out straight. Lifting your hips just a few inches from the front of the chair, lower yourself down until your elbows are at 90 degrees. Push yourself back up using just your arms until your elbows are completely straight.
Modification: Bend your knees and bring your feet it closer. This will allow you to distribute some of your weight to your feet as opposed to your arms.