The floor bow or Dhanurasana requires you to bend your knees toward your buttocks and stretch your hands back to grab the outside of each foot while lying on your stomach. Pull your thighs off the floor and lift your heels away from your buttocks while inhaling.. As your upper body rises off the floor, continue to elevate your heels and thighs higher. Raise your upper torso further higher, your gaze fixed on the ceiling.