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While lots of physical variation is selectively neutral, there is reason to believe that conspicuous testicles served additional purposes for their bearers.

Our bodies are a mishmash of compromises forged in different eras and by survival forces very different from the ones we now face.

Evolution is NOT based on science.

What does this tell us? For more detailed information on this issue, check out the following books: by Helen Singer Kaplan The Causes, Treatments, and Prevention of Weak Erections Impotence and Premature Ejaculation by Dr N Beck Additional excellent books on this and other topics can be found in the Resources section.

That means most men will achieve their largest natural size in high school.

For elderly males with , however, the sitting position when compared to the standing position is differentiated by the following:• Women prefer men to have a big penis.

In most other cases, only one testis fails to descend and that will probably express itself within a year.

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The simpler penises: Species with penises a-d and h form monogamous relationships and e-g belong to polygynous species.

It tends not to share the common blue tint with a vein however.