Jim Kwik explains that your brain is 75% water, and even a 2% loss of body water impairs cognitive performance. Staying hydrated sharpens concentration, improves mood, and boosts memory. He recommends about eight glasses of water daily, though the right amount depends on your body mass, environment, and activity level.
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About 75% of your brain is made up of water and its function. Did you know that the water in your brain serves as a cushioning and shock-absorbing mechanism, helping to protect it from impact injuries and support overall brain health? But there are more cognitive benefits to staying hydrated. One, it supports your concentration, your attention, and overall mental clarity. Two, staying hydrated helps to balance out your mood and emotions. Research has shown that Dehydration can contribute to feelings of fatigue, irritability, and anxiety. 3, staying hydrated contributes to a better memory. Therefore, this means that dehydration, even as small as 2%, can have a negative effect on your cognitive function. And if you're wondering how much water you should drink, the answer is it depends. Depends on your body mass, your environment, your activity level. But a good baseline is about 8 glasses of water