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To the Editor:—
May I add a footnote to the report on the cardiovascular findings in the group of 43 Yogis (JAMA179:54 [March 10] 1962). Here, in New York City, there are many Yogi enthusiasts among the undergraduate students, always eager to espouse any bizarre trend or cult. Practitioners should be aware that some of these juvenile Yogi entrepreneurs may be able to accomplish amazing tricks with their pulse rate and blood pressure. I believe that I made the first scientific study of the ability to stop the pulse at will (Voluntary Pulse Control, Amer Heart J2:188, 1926). At that time I showed by simultaneous registration of the ECG and pulsations from the carotid and radial arteries that no change occurred in the carotid pulsations or ECG's but that it was true that no pulsations could be noted at the wrist when a trained Yogi subject
Hyman AS. Cardiovascular Findings in Yogis. JAMA. 1962;180(11):987. doi:10.1001/jama.1962.03050240083023
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