Hello. I am Dr. Praveen and I will be answering your question today. Mr. Satyam, masturbation is unrelated to your present health. Masturbation is a natural act. If you think you should gain weight then you need to see a dietician and plan your calories accordingly. Our body constitution also depends a lot on our genetics you should remember. Likewise many people burn more calories due to a high basal metabolic rate. In my opinion, if you see a dietician and increase your calories by 500 kcal each day you will gain weight but dont become overweight also. And eat healthy food to gain weight. Visit a gymn. Increase in muscle mass will contribute to healthy weight gain as well. Wishing you good health. Please feel free to drop in any more queries if need be. Take care. Warm regards, Dr Praveen Jeyapathy