Exercise promotes longevity.

Exercise promotes longevity.

Medical researchers at Harvard and Stanford Universities who studied the habits and health of 17,000 middle-aged and older men, reported the first scientific evidence that even modest exercise helps prolong life. Dr. Ralph S. Paffenberger, the visiting professor of epidemiology at the Harvard School of Pubic Health, who is the principal author of the report said, " We have found a direct relationship between the level of physical activity and the length of life in the college men we have studied." He added," This is the first good evidence that people who are active and fit have a longer life span than those who are not."