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| Description: While you may not have realized it, hormones—in this case, melatonin—play a critical role in your ability to sleep and wake on a regular schedule. In fact, though the practice is not without its side effects and critics, some people take melatonin supplements to try to recover from jet lag or sleep disorders. Picture Stats: Views: 165 Filesize: 608.47kB Height: 436 Width: 654 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=41479 |