During REM sleep, you get three to six erections lasting 5-30 minutes each. They pump blood and oxygen into the penis. Missing morning wood might be an early sign of erectile dysfunction.
Chapters
The third type of erection is called your usual morning wood, but nighttime wood as well too. It happens when you're asleep, especially in your deep stages of sleep, like REM or rapid eye movement. And you can actually have morning wood three to six times in one night. It can last from five minutes to 30 minutes. It's almost like your penis trying to do a push up. Because when you have the nighttime erection or morning erection, your penis gets the increased blood flow, gets oxygen in there, the muscle gets expanded, and it exercises. So when you're not having morning wood, that's actually a symptom that you should be looking at, or you start to have ed.