There are a lot of explanations of what a human being is, but the most accepted explanation says you are body, mind, and energy. Now, the body is clearly visible. It is physical, while the mind is not so clearly visible. Some say the mind is physical and refer to it as the brain, while some say it is different from the brain. But anyway, neither science has understood the brain nor religion has provided the evidence of the mind. But all we know is thoughts affect the body.