As to laziness - I doubt if such a thing exists. I think it’s a word to describe situations that we can’t identify obvious cause for.
I’ve seen so many examples of people who would easily be described as extremely lazy - light up and become highly engergised and remain so when they found their correct niche in life.
There are also lots of other examples - such as high energy people who plunge into exhaustion from things like grief - some never recover
to me - I think that lazy is an insult word used in our ignorance in the majority of cases
