The only organ in our body that thinks is often the one we think the least about. Our brain is the single most important organ in our body, controlling everything we do, including breathing, walking, eating, and sleeping. It’s the central processor for all our bodily functions, the part that interprets what we see and hear, smell and taste, and it's even the place where the chemical reaction associated with love occurs. With all this in mind, we should avoid the following 7 common bad habits that damage our brain.