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1. www.webmd.com › erectile-dysfunction › how-an-erection-occursPenis: Anatomy, Picture, Erection, and Ejaculation - WebMD

   www.webmd.com › erectile-dysfunction › how-an-erection-occurs

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   2024年5月17日 · Also known as impotence, erectile dysfunction (ED) is the inability to have or maintain an erection adequate for sex. If you have a penis, you are bound to experience ED at one time or another ...

2. www.webmd.com › fitness-exercise › heat-exhaustionHeat Exhaustion Signs and Treatment - WebMD

   www.webmd.com › fitness-exercise › heat-exhaustion

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   2024年6月11日 · Heat stroke is a very serious, potentially deadly condition that, unlike heat exhaustion, can permanently damage your brain and other vital organs. When you see symptoms of heat stroke, it's an...