An ideal workout for Arm and chest muscles, the classic offers the support deck. You go on all fours and place the hands at shoulder height. The legs are extended and the toes positioned so that the back, buttocks and legs form a straight line. The head lies in the extension of the spine. To lower the body, and the elbows go slightly to the outside. Push-UPS ten times, repeat. Beginners must not let the knees placed on the floor.