I'm having some trouble with my penis not being fully erect during sex, but it's not an issue at other times. Do you have any advice on how to improve stamina in bed?
It sounds like you may be experiencing erectile dysfunction during sex. To increase stamina during sex, you can try using a medication called Viagra (Sildenafil) taken 1 hour before sexual activity. This can help improve blood flow to the penis and maintain an erection. Additionally, practicing pelvic floor exercises, maintaining a healthy lifestyle with regular exercise, and managing stress can also help improve stamina during sex.