““The body’s hormonal system is inextricably linked with the brain centres where emotions are experienced and interpreted. In turn, the hormonal apparatus and the emotional centres are interconnected with the immune system and the nervous system. These are not four separate systems, but one super-system that functions as a unit to protect the body from external invasion and from disturbances to the internal physiological condition. It is impossible for any stressful stimulus, chronic or acute, to act on only one part of the super-system. What happens to one will affect all.””
