Tightening your arms, belly, hips, or thighs requires putting a lot of effort and time into your gym sessions. You must also focus on specific exercises to achieve a toned, lean, sculpted body.

I’ll take leg day over arm day any time. Usually, that means a barbell, dumbbells, and the leg press at the gym. But I don’t always have time to get there, so when I found a lower body workout that ...