Starting Position: Lie face down on the floor with legs straight and toes on the floor. Place the hands directly under the shoulders.
The Exercise: While maintain a straight line through the shoulders down to the heels push the upper body up off the floor to a straight arm position. Slowly lower back down until the elbows are at 90 degrees and push back up.
Tips: For extra resistance these can be down with feet elevated on a step or bench. The hand position can be changed to alter the target area, as well. Close hands (6 to 12 inches apart) for more triceps or wider hands (6 to 8 inches outside the shoulders) for more pectoral isolation.