jayparkinsonmd:

What really happens to our muscles as we age if we are chronically active?

These are MRI cross sections of leg muscles. Via this recently published study in the journal Physician and Sports Medicine. See also.

(via oliviaisferosch)

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   these photos (compare top and bottom pic) and a study (link provided at the Doc’s tumblr), almost nothing. We can retain...

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   I want to be healthy well into old age. I want to reverse what I’ve done to myself and hope to maintain a healthy...

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   This actually makes me want...train for a triathlon or marathon.

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    My reason for running everyday. -Phil.

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    omgsh. this makes me want to go running.

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    is incredible :)

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