I never willingly get hard anymore , between Meds and Diabeties even Viagra dosn't work. But often I'll wake up hard ( usually before I'm ready to get up) but with any activity it instantly goes away ...like the old line of only enough blood for one head at a time.
After lunch I was sitting in the easy chair and I notice my penis was wanting to rise. It was feeling good and I was getting horny. I got up and going to the computer and had sit down, It sure did not hold was getting limp. That the pits of it.