Board Thread:Theories and Speculation/@comment-45444155-20200410191621/@comment-4912646-20200412220909

The explanation of how Naruto (and to a lesser extent, Sasuke) are imperfect at creating chakra makes sense, but the part about any extra chakra getting wasted doesn't really. Ebisu says the extra chakra is wasted because it can't be converted back into stamina, but there's no reason it can't just be used for another jutsu.

His whole explanation seems to imply that a shinobi's default state is having 100% stamina and 0% chakra, with chakra only getting created as needed, but there are a bunch of things in the series that show otherwise. Concepts like the Eight Gates, Gentle Fist, and sensing all rely on the idea that chakra is constantly being created and flowing through the body at all times, and there are even times in the war arc where we see characters build up their chakra in advance to have it ready for later. That's the part that never made sense to me.