How much do you think you know about your brain? Well, here are some interesting facts that you’ve probably never heard of. The brain divides into 2 main parts: the left side and the right side. The left side of the brain controls mathematics and logic, and the left side controls language, art and colors. Strangely, if you’re right-handed, then your left side of the brain tends to be stronger than the right side, and vice-versa. Furthermore, the brain uses up 25% of the oxygen in the human body, and it weighs about one-fifth of the whole human body’s weight.