Had a long day at work? Feeling stiff? This active stretch will benefit stretch your lower back,which is ideal whether you've been sitting at a desk all day!Here's how to achieve a standing knee hug - make sure you keep your core tight while you balance on one leg at a time.Related:
Try a 3-Minute Workout That Targets the Upper and Lower AbsStand tall and alternate pulling one knee at a time to your chest, and hold the hug for a few seconds before switching legs.
Repeat for 30 to 60 seconds.
Source: popsugar.com