What Does The Brain Do? The brain is basically the control system for the body and without it, your physique basically wouldn’t work! The common grownup brain weighs round three pounds and is responsible for a multitude of features. This contains speech, memory, feelings, character, cognitive health supplement behaviour, intelligence, language, sense of ache, organ perform, physique movement and the understanding of our senses. To do all that it takes a variety of vitality and assets