Hi, I hope this question is not lame. During sexual intercourse, I take something like 30 to 45 minutes to cum (releasing semen). After I cum, I lose all interest in going for another round. I just feel too tired. I don’t know a better way of asking my question but here’s what I want to know: Is this normal? Is it normal for a young man like myself to go only one round of about 30-45mi, and then feel unable to go another?