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For those who do, in fact, have too little of the male sex hormone, the signs can be subtle and nonspecific. Among them: loss of muscle mass and decreased fitness performance.
Research from male rhesus monkeys suggests testosterone functions to increase sexual motivation, thereby motivating males to compete for access to sexual partners. It is postulated that the motivating effects of testosterone in male rhesus monkeys promotes successful sexual competition and may be particularly important motivating tools for low ...
English: Complete demonstration of the orgasm process of an adult male. The subject is a 27-year-old healthy circumcised Caucasian male. The video begins with the subject's genitals in a non-aroused flaccid state (0:00). As arousal progresses(0:30), the subject's penis becomes erect, the scrotum tightens and the testicles elevate.
Aromatase excess syndrome (AES or AEXS) is a rarely diagnosed genetic and endocrine syndrome which is characterized by an overexpression of aromatase, the enzyme responsible for the biosynthesis of the estrogen sex hormones from the androgens, in turn resulting in excessive levels of circulating estrogens and, accordingly, symptoms of hyperestrogenism.
The hormone that helps you orgasm is the same one that your body produces when you root for your favorite sports team, lift weights at the gym, or watch Game of Thrones.
Male sexual arousal. On the left, the male genitalia are in regular, flaccid state. On the right, the male is sexually aroused, the penis is erect and the scrotum is tense. Erection of nipples; Penile tumescence and erection; The veins in the penis may become more prominent; Tightening and/or retraction of the foreskin often exposing the glans ...
Men and women exhibit different symptoms for hypergonadism. A few of the symptoms that men can experience are increased sex drive, early balding, excessive muscle mass, and acne. Women can have symptoms such as, increased growth of facial hair, deepened voice, coarse body hair, and an irregular menstrual cycle. [5]
The biology of romantic love has been explored by such biological sciences as evolutionary psychology, evolutionary biology, anthropology and neuroscience.Specific chemical substances such as oxytocin and dopamine are studied in the context of their roles in producing human experiences, emotions and behaviors that are associated with romantic love.