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How you become a male i
What makes a man a man?
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able adolescent aggressive anxiety attitudes baby become behave believe body boys brain cause cells cent changes child childbirth childhood cholesterol chromosome condom contraceptive coronary heart disease couple develop doctor drugs effect ejaculatory incompetence emotional enjoy erection erotic fantasy fear feel female gender-identity genitals girls gonorrhoea heart attack heterosexual high blood pressure homosexual human sexuality hypertension impotence increase infected inhibited sexual desire less lover male man's penis masturbation mother muscles myth normal obese obtain occur older parents penis person phase physical pregnancy premature ejaculation psychological puberty reach orgasm reduce scrotum sex centre sex hormone sexual arousal sexual behaviour sexual desire sexual dysfunction sexual experience sexual intercourse sexual partner sexual pleasure sexual problem sexual response sexual stimulation sexually active sexually transmitted diseases society sperm spermatozoa syphilis testicles testosterone touch treatment urethra usually vagina wife woman woman's vagina women