Jacobs Ladder provides the most efficient exercise for those serious about conditioning. Unlike most cardio machines, this patented treadmill climber utilizes low impact, high range of motion exercise to provide a superior cardio workout to both the upper and lower body. Jacobs Ladder is an innovative cardio machine with ladder-type rungs on a non-motorized continuous treadmill. It’s self-paced, so the faster you go, the faster it goes. Jacobs Ladder is preferred by pro football teams, the FBI, the Army, the Navy, West Point and numerous Division I universities to improve their strength and conditioning programs.