The human brain is made up of billions and billions of cells called neurons, which used electricity to communicate with each other (that's what the Matrix is all about, well probably). The combination of millions of neurons sending signals to each other at once produces an enormous amount of electricity just for an automatic ability like breathing can cause the brain to fire a large amount of electricity around, so what do you think what would happen in your brain if you were exercising.
We can measure the electrical activity in your brain by using sensitive medical equipment (medical experts call it an EEG), measuring electrical levels over the scalp.
The combination of your brains electrical activity is called a 'Brainwave pattern', the pattern emits tiny electrochemical impulses of different frequencies. The brain wave patterns are split up into 4 different groups which are known as -
Beta- emitted when we are alert , or we feel tense, afraid or agitated. The frequency ranges from 13-60 pulses per second.
Alpha- When we are in a state of a physical and or mental relaxation, although we are aware of what is going on around is. The frequency is around 7-13 pulses per second.
Theta- This is a state of reduced consciousness, say you are drowsy or thinking of sleep. The frequency is around 4-7 pulses per second.
Delta- This occurs when you are unconscious deep sleep or even in a coma. The frequency is 0.1-4 pulses per second.
"A typical neurone makes a bout ten thousand connections to neighbouring neurones. Given the billions of neurone's, this means there are as many connections in a single cubic centimetre of brain tissue as there are stars in the Milky Way."
- David Eagleman
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