Thursday, March 22, 2012

Your Body On...

Women's Health Magazine has a great series, Your Body On...  Love this month's especially:

Your Body On... A 30-Minute Run

In the first few seconds: Your muscles start using adenosine triphosphate (ATP), energy molecules made from food and convert it into adenosine diphosphate (ADP)

In the first 30 seconds:  In order to release more ATP cells break down glycogen from muscle stores and also pull glucose directly from blood; muscles release lactic acid

In the next few minutes:  heart starts beating faster directing blood toward your muscles and away from functions you don't need; heavy breathing for increased oxygen demand; muscles engage keeping you upright, controlling gait, pushing feet of ground; you begin to torch calories; burning of glycogen raises body temp leading to a healthy flush and sweating

Within 10 minutes:  if in good shape - you feel strong; if not - every minute feels more like a slog;

After 30 minutes:  as you slow to a walk, energy demand falls and breathing gradually returns to normal; you feel energized; brain has triggered rush of dopamine, the mood elevating hormone;

...resulting in the runner's high:)

For the complete article see the April 2012 issue of Women's Health Magazine.

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1 comment:

  1. That's why actually starting the run is so important - so uch to miss out on if you stay in bed or on the couch.


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