Why nightfall cause ? any side affect.

See remark: What is the basis of the question? what do you feel after nightfall ?? Naturally,if you have a minor physical complaint (neck pain) or emotional problem you may experience the effect more SINCE YOU ARE NOT OCCUPIED with your day chores that mat distract you from what little ailment you have

I know what he means: "Nightfall" is a term used in some countries for a man having an ejaculation while he's asleep or just waking up. Once a healthy guy has reached puberty, this is going to happen from time to time unless he ejaculates during the day by himself or with a partner. It's good, you're supposed to enjoy it, and you should be proud of it. Anyone who tells you otherwise is ignorant or lying.