Participated in the 8 days class and the miracle happened on the forth day after 8 months of amenorrhea. Although I am young, I am going through menopause for 8 months now. I don't want to take pills, so I must accept it. I did not expect to recover in this class. On the forth day, my menstruation arrived all of the sudden, with normal color and fluid. Qigong Science is amazing! The pain in my shoulders and neck, and in my arm, have disappeared.