I am 22 year old and I want answer of my few questions like1) I sometime have nightfall frequently is it necessary to masturbate to stop the night fall, 2) is it good to masturbate, is it healthy and does not have any side affect on my sperm count. 3) if I masturbate 3-4 times in a week is it good. 4) how to fulfill my sexual satisfaction by masturbating or by not thinking about sex. 5) and last question I ejaculate quickly how to increase my ejaculation time so that I can stay for long time in bed and enjoy my sex with my partner.