Patient's question:
I woke up in the middle of the night with a very urgent need to urinate, only to find that my penis was erect. So, I had sex with my wife using her cervical mucus, but it still wouldn't go in. What's going on?Doctor's answer:
Hello, it's normal. I suggest you don't hold your urine and try to empty it. How about that? Human sleep can be divided into two phases: the non-REM sleep phase and the REM sleep phase. These two sleep phases alternate 4-5 times during each night's sleep.