I once heard from my yoga instructor, "if you only do one pose a day, make it this one". Legs up the wall pose - Encourages circulation of blood and lymph from the feet and legs. Bathes the abdomen in fresh blood, stimulating the digestive organs. Soothes the nervous system, allowing your body to shift its attention from warding off stress to daily bodily functions, including detox. Note the pillow/bolster she is using.