4) Put your outstretched fingers together and rotate your hands inwards so that the towel runs around the backs of your hands and over your thumbs. Open your fingers, then stretch them out forcefully to stimulate the nerves in the ends of your fingers.
④手指合攏，由外向內繞，此時布巾在手背與大姆指間，手指伸開，再用力伸直，以刺激末稍神經。