Whatever you bring into your mind, you also bring into your physical body. What your mind does, affects both your psychology and your physiology. If the mind becomes afraid, for example, the body contracts in fear which affects our internal organs. If the mind becomes angry, the body also seethes with anger, overheating our organic functions. If the mind gets attached to something outwardly, bodily movement is also obstructed. The vibration of the mind sets the rate for the vibration of the body. This is a question of energy, not mere chemistry. If our mind is hyperactive, our physiological systems become overstimulated and overactive. If the mind is dull and slow, then the body also becomes dull and lethargic. The mind is the background guiding power behind all physiological functions; not that this occurs consciously or by choice, but it happens automatically according to the inherent mind-body connection.