Board Thread:Versus Debates/@comment-26704954-20160301064038/@comment-734582-20160307210402

UltimaDude wrote: Yeah, that always been bothering me. Can't still living shinobis just gather chakra just like how it was shown in basically every Naruto game? Heck, even some characters could do it, why not just every character? Basically, fatigue.

Chakra is made from Physical and Spiritual energy. But those two energies come from the body. As your body and mind fatigue, more chakra can not be made. That´s where the limit for chakra comes from.

But an Edo Tensei is the soul of a dead person. They can fatigue, but as they´re already dead they don´t need sleep to refresh. And their body regenerates, so physical energy doesn´t need nutrition and rest to regenerate. So all an Edo Tensei has to do is wait a bit and the Jutsu itself will regenerate their chakra.