Staying hydrated is good for the body: it lubricates your joints, carries fluid to all your internal systems to help them function, helps your body maintain a healthy temperature, even clears your skin of toxins to make it more radiant.

But is getting dehydrated really that bad?

Turns out, yes, it is. And while we like to focus on the positive aspects of good hydration, it’s important to be aware of what happens to your body (and your mind!) when you aren’t hydrated. The good news is, what we’re about to tell you can be EASILY avoided by staying hydrated.

Here are three scary facts about getting dehydrated:

1. Your body doesn’t tell you you’re dehydrated until it’s too late.

You’ve probably heard that if you’re thirsty, you’re already dehydrated. Which is a problem because all the negative effects of dehydration are in motion, and you’re stuck doing damage control on your own body.

Hydration requires a keen sense of what your body needs and a proactive approach to staying ahead of that. Prepare your body for a workout, hydrate harder during work hours (when mental performance matters most!), flush your system with fluid when you’re sick or traveling. And if you are thirsty, hydrate as quickly as you can.

2. Dehydration makes you physically ill.

About two-thirds of our bodies are made up of water. When we lose water and don’t replace it, our bodies are missing a key ingredient to functioning properly. The list of potential ailments that may be stemming from dehydration are staggering: migraines, constipation, kidney stones, muscle cramps, dry mouth, chills, joint aches, even sugar cravings.

If you lose consciousness or experience delirium (easier than you might think after a long run on a hot summer day!), then you’re hydration is so severe your life could be in danger. There’s absolutely no reason to risk putting this kind of strain on your entire body.

3. Dehydration affects your ability to think clearly.

In fact, dehydration has been connected to poor or slow performance at work. Perhaps explained partially by a 2010 study that ties dehydration to poor memory and even more vividly by a 2013 study that suggests shows a significant decline in cognitive performance when performing work duties while dehydrated.

And we’re not talking about extreme dehydration in either example, but mild. In the latter study, the test was performed on pilots and concluded that proper hydration is “critical for flight safety.” While not every job impacts the safety of others, it’s important to most professionals be able to perform optimally, which means well hydrated.

So, what’s the solution?

For those of us who want to keep our bodies and our brains in tip-top shape and keep our minds clear and our moods stable, hydrating is an easy win. Of course, Hoist is here to help you do just that—and rehydrate instantly when you start to feel thirsty! The truth is, dehydration sounds scary but barring any anomalous health issue, it’s completely avoidable.

All you have to do is drink!