Different EQ during the day
One day at the morning, I was trying to take a pic of my penis while measuring it. But I had a very hard time maintaining a full erection. At last, I quit trying.
Later on that day, to be exact at the afternoon, I was in the restroom and I try to get an erection. I jerk my penis a couple of times, and I have a firm erection. I can maintain this erection for a while without even touch my penis.
At the night of that day, after taking a piss, I tried to get an erection again. I could achieve a very hard and firm erection that looked to stay forever.
This isn’t the first time I noticed this. So, is there a relation between the time of the day and the erection quality.