While physical anatomy and chemical reaction are both important for getting and keeping an erection, the brain is one of the most vital parts of this puzzle. "An erection is controlled by multiple areas of your brain, including the hypothalamus, limbic system and cerebral cortex," notes Axe. "Stimulatory messages are sent to your spinal erection centers and this facilitates an erection. When there's an issue with your brain's ability to send these important messages, it can increase the smooth muscle tone in your penis and prevent the relaxation that is necessary to get an erection."
This simple five-question quiz asks you to rank your erections in various situations (during the past 6 months) on a scale from 1-5. It’s not a perfect tool, but it’s simple, short, and gets you thinking about the difference between just getting an erection and being hard enough for penetration and a healthy sex life (because those are two different things).
Assuming an absence of any significant spinal damage or hormonal disorders, the potential barriers are in fact different at stage one and two. At stage one, anything that causes impairment in your psychological ability to become stimulated will hamper an activation of your nervous system. At stage two, anything that contributes to a narrowing of blood vessels will hamper the engorgement of your erection.
What does zinc do for you sexually?
In an article on Men’s Health about things that wreck your erection, some examples of threats to an erection are sugar, lack of sleep, sleeping near a newborn baby, and lack of vitamin D. The common theme in the article is that reduced testosterone impacts your erection. Not all scientists agree with that. But there are definitely links between testosterone and erectile problems.