In Chinese Medicine, a person with a weak Yin but strong Yang constitution will be thin in body form but jumpy, alert, and high energy. I will explain why this is below.
Lacking this perspective, scientists use the theory of evolution to explain their new observation:
“Scrawny people tend to think approaching sounds are closer than do strong people,” a new study found. See the original article from LiveScience.com In essence, the study finds that skinny people respond faster to approaching sounds.
The scientists postulate that the fraction of a second quicker response time on the part of scrawny people must be a result of evolution.
That fraction of a second must have allowed the scrawny, weaker people to escape dangers they could not hope to fight off – unlike stronger people who could afford to react a fraction of a second slower, to say, a saber tooth tiger attack.
A more physiological answer is found in Chinese Medicine.
Chinese Medicine describes all physiological phenomena and substances as either “yin” or “yang.” The different yin and yang substances and phenomena in the body are polar opposites that balance one another.
Yin and Yang are opposites that balance one another.
Generally speaking, yin
grounds a person,
keeps them calm,
allows them to fall asleep at night,
cools them when they get hot,
Yang, on the other hand,
allows a person to expand their thoughts,
feeds excited emotions,
provides the mental and physical energy to work all day,
heats up the body when it is cold,
When a person has a thin body such as the one described in this study, they are usually yin deficient with vigorous yang.
As one Chinese Medicine text says, “Thin people have more fire; obese people have more phlegm.” (‘phlegm’ represents slowness, sluggish physiology, etc.)
Chinese Medicine explains this phenomena not on evolution, but on physiological harmonies of the various body systems in a given person.