It seems that there are two powerful important centers in the human body: 1) The BRAIN, whose duty is sensual perceptions through the nerve system, and also controlling the movements of the limbs through the muscles. 2) The HEART, is a hollow organ with muscular walls, settled in the chest. Heart is the functional center of senses and emotions, and it physically reacts on strong feelings. When we encounter a tragical event, we feel its PRESSURE upon our hearts, and also when we meet something that pleases and makes us happy, we feel its PRESSURE through the nerves of our heart.