Massage the little finger can relieve: shoulder pain, low back pain, irregular menstruation, asthenopia, obesity and insomnia. Massage your left hand first. Press your right thumb and forefinger on both sides of your left thumb, and press 10 second when you feel pain. Hold the left thumb up and down with the right index finger and thumb respectively, and press hard for 3 seconds. Massage with your right hand in the same way.