Lack of water makes you dumb..

While we often hear that the human body is 70% water, this figure isn't entirely accurate and decreases with age. What's more surprising is a cold fact about our brain. Although the human body is about 60% to 70% water by weight, the brain, which controls our thoughts, memories, and body, is a whopping 75% to 80% water, similar to the lungs. This means the brain is an organ that heavily relies on water. When the body is dehydrated, even mild dehydration (e.g., losing 2% of body weight) can significantly impact brain function. This can lead to difficulty concentrating, decreased short-term memory, slower reaction times, and even headaches and mood swings. Therefore, staying hydrated is crucial not just for bodily metabolism but also for maintaining clear thinking and good cognitive function. Next time you feel foggy-headed, perhaps a glass of water might be more effective than coffee.