What it does: This standard yoga poses is actually a mild inversion, since your heart is higher than your head when you're in the upside down-V shape. It also strengthens your upper body, stretches all the muscles in the back of your body, calms the mind, and improves digestion.
How to do it: Start on your hands and knees with your hands directly under your shoulders and your knees directly beneath your hips, either on a yoga mat or on a hardwood floor (carpet is too slippery your hands will slide out from underneath you). Tuck your toes under and slowly straighten your legs. Reach the backs of your thighs back as you press the full surface of your palms in to the floor and let your head dangle. Stay at least five breaths and as long as a minute.