I think the answer is psychological progection
Increase blood flow to your working muscles, better preparing them for the additional workload to comeIncrease the delivery of oxygen and nutrients to your muscles, which prevents you from getting out of breath to early or too easilyPrepare your heart gradually for an increase in activity, helping you avoid a rapid increase in blood pressure.Prime your nerve-to-muscle pathways to be ready for exercise, which can improve the quality of your workoutImprove coordination and reaction timesReduce the chance of soft tissue (ligament, tendon and muscle) injuries by allowing your muscles and joints to move through a greater range of motion easily (and safely)Lubricate your joints for easier (and less painful) movementIncrease blood temperature, which can allow you to work out longer or harderPrompt hormonal changes in the body responsible for regulating energy production of releasing body fat.
<span>Stress disrupts the body's systems. It inhibits the body's ability to resist illness. Without a return to homeostasis our body stays in an "alarmed" condition and becomes exhausted and more likely to cave in to diseases including heart disease, cancer, chronic headaches, ulcers, and depression among others.</span>
