Learn to listen to your body and tone the ligaments of your knees slowly and safely. Using a rolled-up yoga mat, or rolled-up towels, or even a bed pillow rolled in a towel, you'll do a repetitive, careful alignment exercise to ensure that the muscles of your legs are evenly firing, as well as some standing and seated postures to help you feel the four corners of your feet and tone your leg muscles. Props Needed: An extra yoga mat or a blanket.