Today, more than 70 million Chinese practice qigong every day. Some do this to treat and cure an existing illness. Others are trying to prevent the onset of disease. Still others want to feel and perform better, experience higher levels of energy and stamina, and slow down the ageing process. Qigong is least effective against acute illness or medical emergencies. It is better at preventing disease, and treating chronic conditions or disabilities. Inspired by tales of the qigong masters' miracle cures, many Westerners are traveling to China for treatment.