8 Folding Treadmills That'll Take Up Minimal Space in Your Small Apartment

WALKINGPAD A1 Pro Walking Pad Folding Treadmill ($599)

Walking on an under-the-desk treadmill with no handholds can often feel like a balancing act, but WalkingPad's folding treadmill makes it a stress-free experience. Its gravity sensors detect your pace and footing, automatically adjusting the speed to prevent you from tripping or falling. The treadmill can also be controlled through a mobile app or the included wireless remote control, so you can conveniently stop, start, and change the speed when necessary.

What reviewers say: "I accidentally walked 9 miles today. I seriously just plain forgot I was walking for hours during the workday, because it's so easy and comfortable to walk at a casual pace while I'm working."