Beer lovers, rejoice!

A sex expert has found that drinking a few cold ones before making whoopee will help you perform better in bed.

In her recently published book, “The Married Sex Solution: A Realistic Guide to Saving Your Sex Life,” Dr. Kat Van Kirk describes four different ways a man can benefit from drinking a brewskie before getting down to business, according to the website AskMen.com.

First, the clinical sexologist and marriage and family therapist says knocking back a few pints will help make men last longer. The beer ultimately overloads one’s body with phytoestrogens from the alcohol, which are scientifically proven to delay orgasm, she says.

Next, Kirk explains how dark beers such as Guinness can boost a man’s libido and lead to longer, more intense erections because of their high amounts of iron, which increases the amount of blood circulation to the penis.

She then points to studies done by Italian researchers who found that daily beer drinkers have more stamina than their sober counterparts — and are 31 percent less likely to have heart disease, heart attacks or strokes.

Lastly, Kirk points out how folks who hit the bottle won’t have to worry about getting an upset stomach when the mood is right. Beer contains loads of probiotics and B vitamins, which are very good for one’s digestive health.

“This means it can help fortify your overall health and be better on your stomach so you won’t feel sluggish during sex,” Kirk says.

She later adds that if men really want to step up their game in the bedroom, there is an actual beer that is specifically made to aid men in performance enhancement.

Dubbed “50 Shades of Green” and bottled by Innis & Gunn, the beer contains “ginseng, ginkgo biloba and damiana” — which help achieve “increased sexual desire, blood flow and nerve stimulation.”