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A popular urban legend suggests that hot sauce, when applied to the anus, leads to an immediate and long-lasting erection. Is this a recipe for pain, a useful sexual stimulant in a pre-Viagra world, or both? Playing the pain game The chemicals in hot sauce that cause the painful burning sensation are capsaicinoids, a family of hydrophobic organic molecules found in chili peppers. The pain generated by capsaicinoids follows the same biochemical pathway as a tarantula's venom — that's fricking scary.

Just released, it was made from a series of images captured during an experiment some years ago. The study aimed to prove that it was possible to image male and female genitals during sex and to help better understand human anatomy. Trending Latest Video Free. The other humans: The emerging story of the mysterious Denisovans Covid news: England lockdown to be extended by at least three weeks Sharks at unprecedented risk of extinction after 71 per cent decline CRISPR-like tool for RNA editing could temporarily alter your proteins New coronavirus variants detected in sewage before showing up in tests. UK advisers cautious about how much covid vaccines cut transmission Covid news: England lockdown to be extended by at least three weeks Sharks at unprecedented risk of extinction after 71 per cent decline Using hand gestures when we talk influences what others hear NHS England criticised over missing ethnicity data for covid jabs. Dan Hooper: What happened at the big bang? Science with Sam explains The health benefits of sunlight: Can vitamin D help beat covid?

Researchers report today that penis size does matter to women — though within limits. Male genitalia evolve quickly. Biologists have puzzled, therefore, over what factors might have caused the human penis to become so large.

Despite the displays of female sexuality on the Internet, and scantily clad pop stars and models, the word vagina seems to remain taboo. In fact, myths and misinformation seem to surround the vagina. It can't. Sometimes, a woman's entire genital region is referred to as the vagina. But in fact, the vagina is just a part of the package, so to speak.