The Tanaka et al. formula is based on a study of 514 healthy men and women aged 18-81 years. The formula is as follows: MHR = 208 - (0.7 x age) The Tanaka Max heart rate formula is a popular method used to estimate an individual's maximum heart rate (MHR) based on age. Hirofumi Tanaka, a professor of kinesiology and director of the Cardiovascular Aging Research Laboratory at the University of Texas at Austin, developed the formula. Here I'll explore the history, implementatio