You haven't felt the burn in until you've mastered cossack squats. Here's exactly how to do perform the move correctly, according to a trainer. Squats never fail to provide the best and worst burn.

This isn’t the first time I’ve harped on about the benefits of Cossack squats, and it won’t be the last. I’m such a fan of the exercise and its ability to transform lower-body strength, mobility and ...