21 gramm

They say that the soul weighs 21 grams.
Interestingly, the human body may weigh differently (depending on the physiology and life style)
The soul, too, probably. How do you think?
But also the question is, the weight of 21 grams - is the limit? or Norma or?
the quality determined by quantity?
And with what categories can we approach to the spiritual substance?

Grem