Why is the Upper trapezius muscle called the “universal stress point” and connected to fat/lipids

When the body is under stress, we know that it first looks for Glucose for an energy source, then protein then lipids (fatty acids).

Under stress the pre ganglionic fibers that end in the adrenal medulla secrete acetylcholine which activates the great secretion of adrenaline (epinephrine) which acts primarily on the cardiovascular system

Under stress the body in need of more energy is looking for more oxygen. Aerobic metabolism is up to 15 times more efficient than anaerobic metabolism in producing ATP. There are chemoreceptors in the carotid bodies and medulla which supply information to the hypothalamus regarding blood gases O2, CO2, and H. When the brain receives afferent signals relating to ventilation it sends signals through the efferent fibers to the respiratory muscles, the diaphragm and intercostal muscles.

The heart and the skeletal muscles (which includes I might add the intercostal muscles) prefers fatty acids for a higher yield of ATP. The spinal Accessory Nerve XI whose nucleus lies within the spinal cord (C1-C5) which ironically is in the same area as the phrenic nerve to the diaphragm (C3-C5). The cranial portion of the Spinal Accessory Nerve originates in the medulla where the chemoreceptors for the monitoring of the blood gases are. The Spinal Accessory N. is also the innervation to the Sternocleidomastoid and Trapezius (The Universal Stress Point) part of the breathing mechanism.

Under stress, breathing is triggered by the need for more O2 which is measured by the chemoreceptors in the brain which is also the area that engages the contraction of the muscles of breathing. With Fat being the preferred source of energy, the universal stress point is established.

God surely knew what he was doing when he made these bodies