Anyone who’s used the machine, though, may be surprised because it doesn’t feel especially difficult (something called “perceived exertion”) — something Cybex mentions on its own website.

Compare Black Friday 2019 gym equipment deals and save now on top-rated Life Fitness, Bowflex, Cybex, Equinox & NordicTrack treadmills, elliptical machines and more BOSTON--(BUSINESS WIRE)--Here ...