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Old 04-03-2013
CoachBobM CoachBobM is offline
Join Date: Jul 2008
Posts: 647

Another point to consider is that the pituitary gland secretes growth hormone in response to exercise, and in people whose long bone growth is not yet complete, this can actually result in an increase in stature.

Once long bone growth is complete, the GH release helps to increase lean body mass, though it no longer results in an increase in stature. Unfortunately, the amount of GH released in response to both exercise and sleep decreases dramatically between your mid-20s and your 40s, which is one of the reasons it becomes harder to build lean body mass as you get older. A typical 65-year-old only releases about 1/7 as much GH in response to exercise as does a 25-year-old.

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