Sympathetic Stimulation... in the absence of parasympathetic stimulation via the vagus nerve, stimulation of the sympathetic nerves increase heart rate. This physiologic mechanism is utilized by Body'Fit pH Fitness™ to help Get More Out of Exercise™. 

Body'Fit pH Fitness stimulates the sympathetic and parasympathetic systems separately and in a specific order. The sequence exercises the lumbar and thoracic vertebrae first in order to stimulate the slow acting, long lasting sympathetic nerves. Also the sympathetic nerve fibers on the left tend to increase contractility of the heart, and the fibers on the right tend to influence heart rate. All exercises start on the left side, stimulating the strength of the contraction before the speed of contraction to increase efficiency of the cardiac pump.

In addition, cutaneous anastamoses (blood vessels of the skin)  around the lips, nose, ears and on palms of the hands are contricted primarily by the action of the sympathetic nervous system. Adrenaline is released by the sympathetic nerves during exercise will lead to faster appearance of aging in these areas because of its vasoconstrictive effect. This is especially noticeable under conditions of extended exposure to UV B-rays such as occurs when exercising outdoors. Body'Fit pH Fitness is designed to release adrenaline in conjunction with adenosine thereby changing the effect of adrenaline from constriction to dilation.of blood vessels. Exposure and vasoconstriction is mitigated by performing Body'Fit pH Fitness prior to working out.