You recognize the feeling. You filled up a glass of water the night before, you crawl out of your bed, and also you obtain up and also begin your day. You find your glass of water sitting on your desk and also decide to take a small sip (you might have actually heard that drinking water initially thing in the morning jumpstarts your metabolism and resets your digestive system). You recoil in disgust. Why is that your water tastes so… what’s the word? Stale?

And it’s true. Scientists have actually uncovered that water does indeed taste stale after being left out for a night and there are two chemical reasons behind the odd flavor.

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Photo by Caroline Liu

The temperature of your water has a far-reaching effect on the taste of your water. The possibilities are that you poured that glass of water from your cold Brita filter and drank a tiny sip of refreshing water. The next morning? That water was more than likely room temperature and also simply didn’t taste as refreshing.

Even though the cold refreshing water may taste much better, the room temperature water helps aid digestion and also keep high power levels much better. If you’re looking to shed weight on the various other hand, drinking a glass of cold water has actually been found to boost your metabolism and can cause an extra caloric burn of 70 calories.

The allude is, yet, that room temperature water just doesn’t taste as refreshing and also crisp as cold water. This might cause that “stale” taste in your mouth in the morning.

Disaddressed Gases


Photograph by Sayuri Sekimitsu

The real factor for that stale taste in your water, yet, is the gases that disfix in your glass of water. This is why if you have a closed water bottle, you don’t have actually the exact same problem. Especially as the water temperature ideologies room temperature, the solubility of the water rises. Sindicate put, solubility is a measure of just how quickly gases disdeal with in a liquid. As temperature rises, solubility increases.

All of this means that various forms of gases are dissolving in your water overnight. These gases incorporate carbon dioxide and even aldehydes and also acetone. The amount of carbon dioxide that dissolves increases the acidity (or lowers the pH) of your water which defines the weird different taste of your water currently.

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Although that was the majority of chemistry (o-chem anyone?), it’s nice to finally understand the reason for your stale water. How perform we solve this problem? Get a water bottle and stick your water bottle in the fridge overnight. That method you deserve to wake up through refreshing water in the morning (hello, metabolism boost). Or, if you want that digestion help, just make sure to cover your glass of water through a cap to mitigate the amount of dissolved carbon dioxide in your glass of water.