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Thank you for your question.
Actually all this is related to your state of mind that you are in.
If you are having normal morning erections and normal erections when watching porn then you have nothing to worry about.
These symptoms do not mean anything.
Yes there are muscles in the penis (corpus spongiosum and corpus cavernosum) that are responsible for erection.
But I am sure that your muscles are fine and there is no such venous leakage problem with you.
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