> This is the battery “theory,” and is obviously untrue from all evidence collected. Exercise and specifically improvement of VO2max, which is the bodies abilit

> This is the battery “theory,” and is obviously untrue from all evidence collected. Exercise and specifically improvement of VO2max, which is the bodies ability to pump and process a volume of blood and oxygen in a period of time, are some of the strongest predictors of life and health span. Exercise and specifically improvement of VO2max also decrease your average heart rate, so it's quite aligned with the battery theory.