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This may also become slightly engorged with blood, but less so than the corpora cavernosa. Penile erection Sexual arousal Andrology Men's health. If you're finally ready to banish the pain and embarrassment of not being able to get hard and stay hard Erections during sleep or upon waking up are known as nocturnal penile tumescence NPT. A majority of weak erections are caused by a combination of sexual misinformation, relationship problems, depression and other life stresses. |
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