It appears that when we don’t drink or sweat our brain shrinks. In fact, 90 minutes of sweating shrinks the brain as much as a year of ageing.
It doesn’t meen you need to stop doing sports, because the grey matter restores in size as soon as you get hydrated again. But it does mean that staying hydrated is very important for being sharp and alert. Failing to drink enough water makes it harder to think.
Drinking coffee and tea, by the way, makes it harder to think too because caffeine acts as a mild diuretic, preventing water from traveling to necessary locations in the body. Take a note.
Let this poor guy in a slow mo video by Drench serves you as a gentle reminder to always stay hydrated.
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Bonus fact: Roughly 70 percent of an adult’s body is made up of water.