Dr. Babalola I answered:
2 years ago
Alright, if you say you do not have or do any of the above, and you have morning erection. The most likely cause of your poor erection is psychological in nature.
Our minds play important role in our sexuality. You need to search if there's anything disturbing you, work related or in the home front.
Sometimes, guilt of infidelity in relationships can affect one's arousal negatively.
So, think on any of these things, and take steps to surmounting then.
Equally, it would be nice if you can do a urinalysis and Fasting blood glucose tests.