Procedure: Use the standard "military style" push-up technique. The starting position is facing down with your weight distributed on the hands and feet, arms straight. The body is rigid and straight, and the hands are placed approximately shoulder width apart. Lower your body until your chest nears the floor at the bottom of the movement, and then return up to the starting position. This is one repetition.
Women have the additional option of using the "bent knee" technique. To do this, kneel on the floor, hands on either side of the chest and keep your back straight. Lower the chest down towards the floor, always to the same level each time, either till your elbows are at right angles or your chest touches the ground.
Do as many push-ups as possible until exhaustion. Count the total number of push-ups performed.