The postures of hatha yoga provide many of the same health benefits as tai chi chuan. Unfortunately, most of the yoga positions are held for three minutes or longer, which can be very taxing on the body. Brief rest periods are therefore needed. Tai chi practice, on the other hand, does not require any rest period because the postures change too quickly to tire the body.
Yogic inverted postures, such as the headstand and shoulderstand, offer two advantages not found in tai chi chuan. First, they relieve the gravitational pressure on the internal organs and glands. And second, they ease the strain on the heart caused by having to pump blood against the force of gravity. Yoga exercises, however, do little to promote cardiovascular endurance.
Moreover, many people cannot perform certain yoga exercises because of health problems. Tai chi chuan, in contrast, may be practiced in virtually any state of health.
The yoga breathing techniques, known as pranayama, have many health benefits. They increase energy levels within the body, strengthen the immune system as well as the internal organs and glands, reduce stress, purify the body and improve memory. They also enhance the cellular expulsion of carbon dioxide, increase arterial circulation to the brain, reduce levels of lactic acid in the muscles, and stimulate intestinal peristalsis.
Unfortunately, if these exercises are practiced incorrectly, they can cause serious mental disturbances. Tai chi chuan does not present these problems. In tai chi, deep breathing is never imposed on the student; it is developed step by step. The student learns to gradually coordinate his breathing with the movements. This is perhaps the greatest advantage tai chi has over yoga.
In 1978, noted tai chi instructor Lawrence Galante and an associate conducted an experiment to determine whether tai chi chuan is effective in stimulating cardiovascular development. They used 25 tai chi students, ranging in age from 20 to 60 years old, as their models. The students had been studying the yang-style tai chi short form for a period of one to seven years. Galante and his assistant monitored the pulse rate, blood pressure and heart rate of all the students before and after they practiced the form. In all cases, the researchers found that if the form was practiced in a low stance, great cardiovascular stimulation occurred-between 60-80 percent of the maximum heart rate established by the American Heart Association (AHA). On the other hand, if the tai chi movements were performed in a high stance, there was very little heart stimulation (less than 60 percent of the maximum heart rate). However, for people who suffer from high blood pressure, or those recovering from heart attacks or heart surgery, the high stance is a better option. According to Galante, a person can easily meet the standards set by the AHA by practicing tai chi chuan three times a day.
Dr. John Painter, a Fort Worth, Texas based teacher of internal Chinese martial arts, claims that "When the movements of tai chi chuan are performed quickly or in a lower formed stance, they have the same beneficial effect on the cardiovascular system as jogging or high-impact aerobics, but without the stress and strain."
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