Most gyms have an elliptical machine. And chances are, someone's on it—and using it incorrectly. The beloved piece of gym equipment has been around since the early 90s, but along with a stationary ...

Walk into any gym across the world and you'll be met by a sea of elliptical machines and treadmills. If you happen to become a regular at any of those said gyms, you're bound to start noticing the ...