ScienceDaily (Mar. 6, 2012) — You might think that the
DNA you inherited is one thing that you absolutely can't do anything about, but in one sense you'd be wrong. Researchers reporting in the March issue of
Cell Metabolism, a
Cell Press publication, have found that when healthy but inactive men and women
exercise for a matter of minutes, it produces a rather immediate change to their DNA. Perhaps even more tantalizing, the study suggests that the caffeine in your morning coffee might also influence muscle in essentially the same way.
The underlying
genetic code in human muscle isn't changed with exercise, but the DNA molecules within those
muscles are chemically and structurally altered in very important ways. Those modifications to the DNA at precise locations appear to be early events in the genetic reprogramming of muscle for strength and, ultimately, in the structural and metabolic benefits of exercise.
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