Hi. quiet We are to learn. Morning wood or MW means erections when you are sleeping, or erections in the morning before waking up. They are a sign of physical erection health in men. These types of erections have nothing to do with sexual arousal necessarily, nor with having a libido. It is when you wake up and feel like you have a hard penis. Wet dreams are when you have an involuntary ejaculation from a sexual dream while you sleep. They tend to occur more in adolescence than in very old age. And they usually happen when you are not having any type of sexual activity. They are very healthy and normal. I often hear that despite being normal, they are considered uncomfortable by semen retainers and high-level athletes, but that's because of respectable beliefs anyway.