How normal is it to have erections during sleep?

Erections during sleep are entirely normal. Early-morning erections are the most common and are a pretty good indicator that the nerves and blood supply to the penis are working correctly. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.