I’ve been thinking about human health for a long, long time – pretty much my entire life. When I was running marathons and battling injuries and illness, I was missing it, and so I sought it. I figured moving on to triathlons would help, maybe by “spreading the damage” across three disciplines, rather than just the one, but that didn’t do it. And so I started tweaking my eating plan by paying attention to anthropological evidence of the human ancestral diet. Obviously, this worked, and for a while, I felt I’d found the optimal path to human health. Things were good.
But my journey didn’t stop at diet. It wasn’t enough. My physical activity had to change, too: resistance training; sprints; hikes, walks, and other long, easy movements; and a marked de-emphasis on Chronic Cardio.

Then I started thinking about sunlight. I’d always felt better when I had a bit of a […]

Original post by Mark Sisson

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Filed under: Fitness