Why Beer Might Just Be the Most Natural Rehydration Drink. In Moderation, of Course!

When we think of rehydration, we usually imagine water, electrolyte-packed sports drinks, or perhaps coconut water. 

But what if we told you that beer, yes, beer, could play a role in keeping you refreshed after physical activity or a hot day in the sun?

Before you reach for a pint after your next run, let’s explore why beer, when enjoyed responsibly and in moderation, has some surprising hydrating potential.

Beer: More Than Just a Boozy Treat

Beer is around 90–95% water, and that already makes it a better candidate for hydration than you'd expect. It also contains small amounts of carbohydrates and electrolytes like potassium and sodium, especially in lighter lagers and craft brews brewed without excessive alcohol or sugar.

In fact, the ancient workers who built the pyramids in Egypt were given a type of low-alcohol beer as part of their daily rations. Why? Because it was nourishing, hydrating, and, unlike the local water supply, safe to drink.

Low-Alcohol Beer and Rehydration Studies

Several studies have looked at how beer affects post-exercise rehydration. One Spanish study found that low-alcohol beer (less than 2% ABV) didn’t interfere with hydration and might even work comparably to water after moderate activity. Some athletes even opt for isotonic beers specifically brewed with sports recovery in mind, think of them as a mix between a shandy and a sports drink.

What’s key here is moderation. A full-strength pint (5% ABV or more) might lead to more dehydration than hydration, particularly if you’re already sweating or haven’t had any water.

The Social and Psychological Boost

Beyond the physical benefits, sharing a cold beer after a hike, game, or day at the beach can boost morale and offer psychological relaxation — which is vital for overall well-being. A chilled pint in the pub garden after a long walk isn't just satisfying, it's sociable, grounding, and often part of our wider wellness rituals.

Beer Rehydration: Dos and Don'ts

DO:

Choose beers with lower alcohol content (under 4% is ideal).

Opt for brews with added electrolytes or isotonic properties.

Alternate with water to maintain true hydration. But not fizzy water.

Pair your beer with a salty snack to replace lost sodium.

DON’T:

Rely on beer alone for hydration after intensive exercise.

Use beer as a replacement for water in extreme heat.

Forget that alcohol is a diuretic, more booze means more bathroom trips.

Bottom Line: The Occasional Pint Won’t Hurt

While beer won’t replace your water bottle any time soon, there is a case for its mild rehydration abilities, especially in lower-alcohol formats and when consumed alongside plenty of water.

So next time someone raises an eyebrow at your post-ramble pint, you can tell them: “It’s for the electrolytes!”

Cheers! And remember, everything in moderation!