Sitting for long periods of time can wreck your body by shortening your hamstring muscles. This can cause your back to overcompensate which will cause chronic pain and poor posture. I’m more of a fan of active or dynamic stretching prior to working out, however, this is a great stretch to do AFTER you have already warmed-up your legs and generally post workout. The only coaching point I would add, that is not demonstrated ideally in the video, is to keep your back and hips neutral. So don’t let your butt come up off the floor!
