Why does Erection quality vary?

Why does Erection quality vary?, sometimes mi dick is 5.5 inches in girth at its maximum and sometimes it doesn’t get more than 5 inches in girth. Is this normal?

If it happens within a short period of time it’s probably just variating of arousal level or you could be getting exhausted if you try too much and you won’t be able to keep it at the very max until you recover again.

Stress, tiredness, distraction, diet, mood. A whole lot of things can affect our EQ. If it comes and goes I’d not worry too much. If it happens (poor EQ) a lot after your PE workout, it’s probably a good indicator that you’ve overdone it.