Dear user, Thank you for writing to HCM. I understand your concerns about nightfall. Don t feel depressed for that because it is not a disease and does not indicate ill health. It does not cause weakness or reduction in sexual ability or potency in future sex life with partner. It can occur at any age, common in those who are less sexually active (Not engaged in masturbation or sexual intercourse with partner) Semen is produced by genital organs continuously; it has to be expelled by some means. This situation is just akin to a glass of full water to which you add more water, with the logical result that it overflows! This happens to semen too. If one neither has sex nor masturbation for long time, semen gets expelled in the form of nightfall. You may simply use sanitary pad temporarily. Night emission will gradually disappear when you become sexually active. You can gain weight by high calorie diet. Night emission has nothing to do with your weight. All d best. Good health.