What age does the brain stop growing?
The physical mass of a brain stops growing when your body stops growing…i.e @ an age of 18 to 21. But the process of learning depends on your concentration level… The best example of this is Albert Einstine, who discovererd E=mc^2 @ an age when he was 70 years above. In study of mechanics you need a high concentration level…& for that first you have to make up your mind, grasp the concepts & practice them hard… good luck… don’t listen to anybody in this matter… just belive in your self…