> I'm also uncertain how 50kg is the weight of a normal person. (...) In this paragraph you seem to be interpreting "A normal person at 50kg" from the parent c

> I'm also uncertain how 50kg is the weight of a normal person. (...) In this paragraph you seem to be interpreting "A normal person at 50kg" from the parent comment to mean "the average person, who weighs 50kg", when what they are saying is "a 50kg person who is neither too fit not too out of shape". A slim (but not extremely thin) 5'4" (1.62m) woman weighs around that much.