Natures Wonders- (Introduction)

by David Turell @, Saturday, September 17, 2011, 02:35 (2742 days ago) @ David Turell

Arctic ground squirrels make enormous body changes to prepare for hibernation. They produce enormous amounts of testosterone, making for huge muscles as well as fat layers, but they don't suffer the awful side effects humans encounter when they overdose on testosterone (as muscle builders do):

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