This is because you are too excited to practice in the gym during the day, and the mental excitement when you sleep at night has not passed. I suggest you take a hot bath after exercise, preferably for a long time, and press your muscles while taking a hot bath. If the gym has a sauna, you'd better steam it. If you have time at night, soaking your feet with boiling water is good for relaxing your muscles, promoting sleep and taking more rest.

Nocturnal emission is normal, that is, you exercise excessively, and another situation is caused by your long-term mental stress. I suggest you listen to some light music before going to bed. The purpose of listening to music is to relax your spirit. Remember not to listen to fast-paced music and TV with violent scenes, which will make you more excited and more difficult to fall asleep.

I am a professional athlete. My teammates and I have had nocturnal emission, which is normal. You don't have to take it too personally.