WARNING: This site features very frank and occasionally explicit accounts of personal experiences of sex — parental guidance is recommended
The shaft of the penis contains three cylinders of sponge-like tissue. During arousal these fill with blood, producing an erection.
The ‘glans’ (head) is loaded with nerve endings, making it extremely sensitive to touch, particularly during arousal.
The ‘corona’ is the flared part of the glans where it meets the shaft and in many men is the most sexually sensitive part of the penis.
The testicles are part of the body’s endocrine (hormone) system and produce the primary male sex hormone, testosterone.
During puberty, the testicles produce a large amount of testosterone, which stimulates sperm production and causes the voice to deepen, muscles to develop and hair to grow on the face and body.
The optimum temperature for sperm production is three to five degrees cooler than body temperature. This is why the testicles hang outside of the body.
On average, the testicles produce approximately 150 million sperm each day.
A ‘normal’ ejaculate contains at least 40million sperm.
It only takes one sperm to get a woman pregnant.
The average size of an erect penis is between 5 and 7 inches.
When becoming erect, a large flaccid penis does not increase proportionately in size as much as a smaller flaccid penis.
The size of a penis bares no relation whatsoever to a man’s fertility.
Photos courtesy of Snap Your Chap