the fountain of youth is really a game-more reasons to play

Just read an extensive article on super effective cardio on the Dr. Mercola newsletter comparing techniques for working slow twitch, fast twitch and super fast twitch muscle fibers.(endurance versus short burst exercises)
my favorite epiphany came from this quote:
“Children and most animals in the wild do not run marathons or lift weights, they move at high speeds for very short periods of time and then rest. This is natural and what optimizes the production of growth hormone.
The higher your levels of growth hormone, the healthier and stronger you are going to be. And the longer you can keep your body producing higher levels of HGH, the longer you will experience robust health and strength.”
new guidelines recommend 20 minutes three times a week.

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