Step out, Muscle up
The squat is a great exercise for building your quads and hamstrings, but a slight tweak can help you work even more muscle. Squatting with a wide stance increases the activation of your glutes, says scientists from Italy. What’s more, setting your feet about twice hip-width apart, as the study participants did, doesn’t lessen the impact on your quads and hamstrings. But be careful: weak glutes can make your knees cave in. keep your knees in line with your toes by pushing outward with your knees as you stand back up.