Quote Originally Posted by UChessmaster View Post
But if the bodies regenerate to inifinity, why can`t chakra, theorically speaking do the exact same thing?
There's no reason they can't. There's just nothing that suggests that they do.

Chakra is created through a combination of physical energy and spiritual energy. We know their bodies regenerate, but we don't know that their spirits do, so there's no reason to assume that they have any more chakra now then they did when they were alive.