Step 1: Lie on your back on an exercise mat. With your arms straight at your sides, bend your knees and place your feet flat on the floor between 18 and 24 inches apart. Step 2: Breathing out, crunch your ab slightly upward and sideways to the right a couple of inches until your right-hand touches your right heel. Step 3: Hold briefly and then return to your starting position while inhaling. Step 4: Repeat on the left side.