>>9441
Isn't it a bit too realistic and plain if you limit everything to the muscle mass and other body features?

If you insist on using numbers, there is another idea: let's make default number which represents average person 10 or 100 (as 100% )and if some of the features are different from average you just say strength is 1 and HP is 2000 what will imply that this character is almost indestructible

there is no minimum or maximum and you can use those numbers in any way you like to express yourself.

For example:
Pain Resistance -5 ( what probably implies that character is a masochist )

HP 1 (what implies that it will go down on single hit.)

Breast size 50 or 500% (aka 5 times bigger than a normal human)