Are you sitting right now? If yes, it might be time for a quick stretch session. This lower body routine takes less than ten minutes and focuses on the muscles that tighten up as you sit—including those around your hips, glutes, and upper thighs. You can do this routine almost anywhere and all you need is something about sitting height, like a sturdy chair or weight bench. As a bonus, these stretches may also help with low back pain.