Explore your nerves by creating a life-sized drawing.
Whenever you see, hear, and feel — and whenever you think, move, and even breathe — your brain buzzes with the activity of neurons.
Neurons send messages from different parts of your body to your brain , all around your brain, and from your brain out to the muscles in your body.
They can send more than 100 signals a second, at speeds up to 400 kilometers (250 miles) an hour. That’s four times faster than a moving car on the highway!