Increament in male sex organ

Exaggerated male ornaments and displays often evolve in species where males only provide females with ejaculates during reproduction. Although "good genes" arguments are typically invoked to explain this phenomenon, a simpler alternative is possible if variation in male reproductive quality e. The "phenotype-linked fertility hypothesis" states that female preference for male ornaments or displays has been selected to ensure higher levels of fertility and has driven the evolution of exaggerated male traits. Females of the stalk-eyed fly Teleopsis dalmanni must mate frequently to maintain high levels of fertility and prefer to mate with males exhibiting large eyespan, a condition-dependent sexual ornament. If eyespan indicates male reproductive quality, females could directly increase their reproductive success by mating with males with large eyespan.
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Do penis enlargement methods work?

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A 'Male Enhancement' Trick That May Actually Work | Time

Half of the studies involved surgical procedures performed on men; the other half involved nonsurgical enhancement techniques used by men. Aphrodisiacs Found in Common Spices. In another study of the same method, men reported an average increase of 0. These gains were hard-earned: in the first study, participants had to be in traction for four to six hours each day for a total of four months, and in the second study, the daily treatment lasted for six months. In another study of two erectile-dysfunction patients, researchers found that the use of penoscrotal rings, which fit around the scrotum and base of the penis, helped beef up size and maintain erection. But given the tiny sample size of the study, the results were inconclusive. Reviewed data also suggested that a six-month regimen of daily penis pumping — using a pump to create a vacuum inside a cylinder to stretch the penis think Austin Powers — while painful, was not effective.
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Add Inches!! (No, Really, Men Can Make It Longer)

Some non-surgical methods for increasing the length of the male sex organ do in fact work, while others are likely to result only in soreness and disappointment, a review of medical literature has shown. Surgical procedures, however, can be dangerous and have an "unacceptably high rate of complications," according to the study, published this week in the Journal of the British Association of Urological Surgeons. This is true despite the fact that "penile length is normal in most of these men, who tend to overestimate normal phallic dimension. A male member -- measured on the dorsal, or upper, side -- can be considered normal in length if it is at least four centimetres 1. Some allowances, they added, must be made for a man's height and his body-mass index BMI , which measures deviation from optimal levels of body fat.
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