How long does morning sleep last?

Male morning penis shows erection phenomenon is a very normal physiological performance, do not need to be too nervous. Specific can last for how long, this is not an absolute concept in the clinical. Under normal circumstances, as long as you get up after urination, it should be said that penis erection will slowly disappear, this situation is a natural phenomenon, do not need to be too nervous, do not need to do special treatment. As long as you can normally complete your sex life in normal sex life, there is no disease, you don't need to be too nervous, and don't do anything.