best teeter inversion table With patented technology licensed from a maker of high-end commercial physiotherapy steppers used by Physical Therapists, Teeter is the only home-use machine with a gentle linear stride that offers zero-impact to ankles, knees, hips, and back. Plus, using both arm and leg strength distributes muscle exertion, decreasing muscle burn-out while also burning 17.4% more calories than a recumbent bike. More results, less pain.