For my friend 26 year, Male; whenever I eat something containing chicken, eggs (with yolk) ; Night fall happens. Even when I take milk at night time or eat tomato same problem persist definitely. As I know there are two type of night fall. 1. When some sexual dream comes. 2. When night fall happens without dream. I have 2nd type problem. I never watch porn and do masturbate 1 time in 1 week (even sometimes 1 time in 2 weeks). But it is sure when I eat such things which are heaviour then definitely night fall happens. It resist me to gain weight. Current weight is 62 kg and height is 5' 9" (Weight is quite lesser than ideal). I think I failed to gain weight by this problem. Please suggest me some medicine. I shall be very thankful to you.