Does Drinking Water Really Improve Your Mood? This Simple Bedtime Trick May Help
Timing your H2O right can help you wake up in a brighter mood
Key Takeaways
- Sipping a small amount of water before bed may influence how you feel the next morning.
- Researchers found a link between bedtime water intake and a more positive morning mood.
- Timing matters: Sipping earlier in the evening may help limit overnight bathroom trips.
Does drinking water improve your mood? Yes—when you time it right. If you’ve ever woken up foggy, grumpy or just…off, the fix may be sitting in a glass on your nightstand. New research points to a simple, almost effortless habit that can set the tone for a brighter morning: a small sip of plain water before bed. Here’s what the science says, and how to make it work without sending you shuffling to the bathroom at 2 a.m.
Does drinking water improve your mood?
Most of us instinctively avoid gulping a lot of water right before bed. Nobody wants a middle-of-the-night wake-up call. But researchers found that people who drink about 9 ounces of plain water within two hours of sleep may have a sunnier mood the next morning.
Japanese scientists writing in PLOS One tracked how this micro-hydration habit affects next-day emotions and found it had a positive effect. The reason? Sleep is essentially a long stretch of not drinking anything, and even mild overnight dehydration can trigger short-term brain changes that show up as crankiness, brain fog or a low mood when you first open your eyes.
Why hydration and mood are so closely linked
Your brain is remarkably sensitive to small shifts in fluid balance. When you’re even a little dehydrated, energy and emotional regulation can take a hit—which is part of why an afternoon slump sometimes clears up the moment you finish a glass of water.
Overnight, the same principle applies, only you can’t keep up with fluid intake when you’re sleeping, of course. Drinking enough water before bed helps your body coast through the night with a little more reserve, so you wake up on steadier emotional ground. (Learn more about how much water you really need to drink per day.)
How to get the benefits—without overnight bathroom breaks
The good news is you don’t need to overhaul your evening routine. A few small tweaks to your drinking habits help you stay on top of your daily water intake without overdoing it.
- Keep it small. Aim for about 9 ounces—roughly a standard glass—within two hours before lights out. That’s typically enough to stay hydrated without overloading your bladder.
- Stick to plain water. Skip sparkling drinks with added ingredients or anything containing caffeine or sugar. Plain water is what the research looked at, and it’s the gentlest option for your stomach and your sleep. Tip: Not a fan of plain tap water? Try the Ninja HydraSense Countertop Water Filtration System, which eliminates up to 99 percent of contaminants for cleaner-tasting water.
- Sip, don’t chug. Slow sips over the course of the evening are easier on your body than one big swallow right before bed.
- Front-load the evening. If you’re worried about overnight bathroom-break disruptions, finish your sip closer to the two-hour mark than to bedtime.
- Pair it with a wind-down cue. Sipping water while you wash your face, read a chapter or set out tomorrow’s clothes helps the habit stick.
A brighter morning is closer than you think
You’ll likely notice the difference within a few mornings—less fog, a lighter mood and a gentler start to the day. It’s a tiny shift, just a glass of water and a little intention before you turn out the light. Sometimes, the simplest self-care really is the most powerful.
Ready for more inspiration? Subscribe to our YouTube channel for video podcasts, health tips and uplifting stories designed for women 40, 50, 60 and beyond.
Conversation
All comments are subject to our Community Guidelines. Woman's World does not endorse the opinions and views shared by our readers in our comment sections. Our comments section is a place where readers can engage in healthy, productive, lively, and respectful discussions. Offensive language, hate speech, personal attacks, and/or defamatory statements are not permitted. Advertising or spam is also prohibited.
