The Teeter Freestep is a dual action machine that can work the whole body. It is a seated stepping motion with dual action arms to engage both upper and lower body. Can be used with upper body only as well. Compact footprint. Manual resistance control, tilt adjustment seat, basic computer console without a whole lot of extra bells and whistles. This is a great machine for rehab/physical therapy type exercise, but is also something the whole family can use!