A brain is a central point for a nervous sytem, and its actual workings are still very mysterious, even to modern science ! A human brain is composed of up to 33 billion neurones, which commmunicate with each other through up to 10 000 synaptic connections. Beyond that, the exploration of how the brain works is still a pioneer's field !

The brain is your central nervous system and basically your lifeline next to your heart. Your brain takes voluntary and involuntary messages and relays them to the rest of your body. Messages like lifting your arms, walking on your feet and feeding yourself are all messages from your brain.