As important as they they, when we only take vitamins, minerals and herbs, we are skirting around the outside of the essentials for health. If we just take supplements without replacing the enzymes, we are wasting a good bit of money, expectation and time.
In order to maintain our mental/ emotional health, bone and muscle density, we need healthy levels of sexual hormones (ie: progesterone and testosterone); without them, we'll be depressed, gain fat and have no drive for life.
Through exercise, we absolutely must maintain our frame or we may as well forget the rest of the program as it will give out regardless of whatever else we do.