This article was reviewed by Lynn Marie Morski, MD, JD. Many men wrongly believe that ED medications like Viagra, Cialis, or Levitra can cause arousal without stimulation. And some men even mistakenly ...

There you are — in bed with your partner, panting, sweaty, and ready for round two. Your brain is ready to rock, but your body just... literally can't. If you've ever wondered why your penis doesn’t ...