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The testes are extremely delicate, and they are comfortable only in a narrow range of temperatures; if they become too hot or too cold, sperm production can be harmed. For this reason, they sit outside of the body so as to keep them cool, though they may be retracted or pulled nearer to the body should they become too cold.

They are packed densely with nerve endings. These produce a disproportionate level of sensation when stimulated.

Conveniently, the crippling pain of striking or crushing your testicles serves as a reminder not to strike or crush them - after all, the future of the human race depends upon their health and continued function.

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14y ago

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