What if you only weighed a fraction of what you actually do? You could run so fast. You could take an immense amount of pressure off your knees while still getting a workout. You could focus entirely on your form.
And what if, as easily as you took the weight away, you could add it back on, gradually increasing resistance like you do with weights? Guess what? You can, and it could change your workouts forever.
We covered the AlterG Antigravity Treadmill back when it came out in 2008. Since then it's become a staple in everything from physical therapy offices to nursing facilities to hospitals to pro sports teams to the Olympic Village, and, of course, high-end gyms. There just happened to be one at the Equinox gym on 63rd and Lexington in NYC, so we headed over there to check it out.