How to Know if You’re Dehydrated

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Many health experts advise people to stay hydrated throughout the day. Water is an essential part of your body. In fact, you’re made up of about 70% water! But sometimes, even if you don’t feel thirsty, there are other signs that you are, in fact, dehydrated. Let’s take a look at what they are. 

Dry mouth

One of the first signs of dehydration is dry mouth. Your tongue feels fuzzy or sticky and it’s hard to swallow. This is especially true if you live someplace dry, like Colorado or Arizona. Make sure to carry around water with you at all times if this is the case, so you can hydrate no matter where you are. 


When you’re not getting enough water, your brain tissue shrinks and your blood pressure drops. Low oxygen and sugar levels can make matters worse. The ensuing headache is caused by receptors around the brain alerting you that something is awry. You’ll know for sure that the headache was caused by dehydration when you drink some water, because the pain will magically disappear as soon as you take few sips.


In addition to headaches, low blood pressure from dehydration can make you feel light-headed or dizzy. This is why if you are outside, sweating under the sun, you might feel like you’re going to faint. In this particular case, you’ll want to drink more than just water. Grab an electrolyte drink to regain some of the salts that are lost in your sweat.

Dark yellow urine

Urine should be light yellow, like the color of lemonade. If your urine is dark yellow and you don’t have any underlying health issues, you’re probably dehydrated. Sometimes, we forget to drink water because we’re too busy working. Keep a bottle next to your desk so that you remember to take a break during the workday.


When your body is missing key nutrients, it wants you to slow down and stop moving. If you’re dehydrated, your body wants to keep whatever water reserves it has, making you feel tired. A glass of water should wake up your body and your brain right away.


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