Alcohol definitely has a negative impact on guys when it comes to sexual function (more often than not). If they overdo it, it can lead to them having a hard time even getting an erection, let alone maintaining it.
Alcohol is a depressant. It works on the nervous system by slowing down brain function, breathing, and pulse. The effect is usually psychologically stimulating, you become freer and less inhibited. However, while it can boost sexual desire by helping a person to relax (hi girls!), it can decrease performance (hi boys!).
Heavy drinking for men decreases blood flow to the penis, reduces the intensity of their orgasm, and can dampen their level of excitement. Which basically means it’s harder for them to get it up, keep it up, or cum at all. Alcohol dulls the senses so they don’t get the same sensitivity or excitement. It just doesn’t feel as good!
Now, this is with HEAVY drinking. A couple beers will not render a guy incapable of having sex or cause any problems. It just loosens them up and increases their sex drive like everyone else. It’s the “overdoing it” part that’s a problem. Everyone’s tolerance level is different so it affects guys sexual performance differently as well. One guy might have a really hard time maintaining an erection after 7 beers, but another might be able to go ahead with business as usual! It’s really about how their body metabolizes the alcohol.
As a rule of thumb though: too much alcohol = bad sex. For men and women! So drink in moderation and stay sober enough to really be able to enjoy yourselves!
Sumptuous Daydreams 