So I realize there are many potential factors here, but I’m using my very limited knowledge of science to make a deduction.

I have went on roughly 4-5 benders now, but was only able to hold a very solid erection my very first time. During the first bender I was also smoking weed through the duration of the bender.

Weed = vasodilator Meth= vasoconstrictor

Vasoconstrictors can increase difficulty in maintaining/getting an erection, whereas vasodilators may help.

The only flaw in my research is that my first bender is when I lived in the south, whereas I currently live on the west coast. So potentially very different sources/compositions.

Does anyone have any anecdotal evidence to help my theory?