i am not a doctor, but i think it can be safely argued that this article is BS and that men fall asleep after climax because of the hormones and endorphines that are released after the event....namely serotonin and oxytocin and it has nothing to do with physical exhaustion. when was the last time you did 30 minutes of aerobic activity and immediately thought at minute 31 "i am now ready to sleep"?
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