Your brain is 73% water. It takes only 2% dehydration to affect your attention, memory and other cognitive skills.
A piece of brain tissue the size of a grain of sand contains 100,000 neurons and 1 billion synapses all communicating with each other.
More than 100,000 chemical reactions take place in your brain every second.
Exercise increases brain volume by raising levels of brain chemicals that promote new brain cell formation and new neural connections.
Learn more about the brain . . .
Image from Wikimedia Commons
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