The previous post laid out the history of stress, explained how stress imposes a reaction, and the difference between good stress and bad stress.
In all activities, there is always a ceiling. It can be genetical and limit maximum strength, speed, coordination in physical performance. It can be environmental or geographical. Where we live and study determines for example the quality and scope of work. It can be a time ceiling, giving us limited time to accomplish required tasks.
This maximum can be attainable after a long and hard journey and is illustrated by the red line in the graph below.
The term stress was borrowed from physics by the first stress researcher Hans Selye. In physics, stress describes the force that produces strain on a physical body (i.e.: bending a piece of metal until it snaps occurs because of the force, or stress, exerted on it).
Hans Selye noticed that all his patients, regardless of disease, all looked under duress. He decided to name “stress”.
In a previous post, resting heart rate was shown to reflect physical and mental condition. A low resting heart rate correlates with good health compared to a high resting heart rate.
It becomes complex when you consider age. Older people have lower resting heart rate. And individuals with the same age, nutrition and overall fitness level can have vastly different heart rates. For instance, my maximum heart rate when running is around 172bpm while a friend has 200bpm, with the same heart rate sensor. It does not mean however that I am more or less fit than others.
Noise pollution characterizes modern society: busy highways and railroads, bad commute traffic, aggressive motorists, construction, manufacturing plants, loud TVs, vacuum cleaners and neighbours. These are numerous, pervasive, persistent and socially significant.
You probably know about the ill-effects of processed food, lack of exercise, mental fatigue, but have you thought about the long-term consequences of noise pollution?