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

Sunny Health and Fitness (SF-T1407M) Manual Walking Treadmill ($150)

This treadmill is powered by the user's speed — meaning it's best for walking over jogging, but also that it requires no electricity. It sits at an incline of 13.5 percent and will deliver a surprisingly intense workout. And the minimal design means it's so easy to fold up and store.

What reviewers say: "Love this. It definitely gets the job done if you're looking for an intense workout on the cheap. Love the manual as it doesn't take power, you can change the speed with your feet and pace. Love that it folds up to so it doesn't take up room!"