Hello dear I understand your concern Masturbation is normal sexual behavior. If you are doing masturbation daily then it could be a slight weakness and cause decrease in sexual stamina. But it does not cause premature ejaculation, erectile dysfunction and any other sex related side effects. Excessive masturbation cause weakness and that decrease sexual stamina due to protein loss. But it is not necessary it will occur in all the individuals. I would suggests to moderate masturbation, 2-3 times/week. Do regular exercise, Take high protein diet, milk fresh fruits, green leafy vegetables, drink plenty of water. Avoid stress. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar