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.
I wonder how good the joints are of the 74 year old triathlete, though?
I have a 28 year old friend who is, as you say, “chronically active”. His joints are already showing signs of deterioration (as examined due to other injuries). Chronically active means chronic wear and tear and inflammation. Muscle maintenance is important, but it doesn’t have to be at the expense of other parts of your body.
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