Sit again on your calves and ankles and place your elbows before you on the floor close to your knees. Then come onto all fours and place your head between your two hands. Take a deep inhalation, hold your breath, and roll your head forward on the floor until you feel a stretching in the back of the neck. (Be careful not to ever stretch your neck. If you have problems with the cervical vertebrae do not do this movement). Hold your breath while rolling your head back and forth within the limits of the stretching ability of your neck muscles. Then exhale and relax. Do this three times.