downward-dog-yoga-150 . Allow your head to relax. Begin to press your heels into the floor. Dont worry if they dont make it—the act of trying to press them down strengthens the legs and pulls the weight of your body back. If you need to keep a slight bend in your knees for your lower back, that's fine—just keep lengthening the spine. Take some long, deep breaths and get into the feeling of being a dog!