chakra is like a physical form of one oneself.!!
the more chakra you have the stronger you are
O
the less chakra you have the weaker you are...
it kind obviate to the point of going for the strength other than anything else.!!
so at the end of the day people ask themselves for what they really are...!!
Maybe their bodies have become dependent on it through time.
No, if that was the case, civilian children and overall civilians wouldn't be given te option of being a ninja.
They still have chakra just a small amount and they're not able to meld it because they don't know how to mold it.
My guess is spiritual energy = health of mind (like, it's still functioning enough to make you move and breathe and such) and physical energy = health of body (you're not physically exhausted and your muscles can still function) which is what chakra consists of.
Humans had all these things before chakra, but it when chakra was introduced, they started to mix with each other (because in order to create chakra, you have to mix physical and spiritual energy) to the point that you can't take either away and if you lose all of it, you lose the energy needed to function and survive.
yeah . ppl depend on physical and spiritual enery to survive . but can ppl just stop moulding chakra when they run out of it ? they wouldnt die as long as they still have enough amount of those energy even if their mixture-chakra is drained
First,people always had chakra but not the knowledge to utilize it,though they didn't have monstrous chakra level by eating the fruit. Saying that they didn't had chakra is like saying earth didn't had gravity before newton explained it.
Second,to prove my first point,sakura's family was a commoner type,but she still learned the way of utilizing her chakra.
OT- It's a life force in common language.