Why do rocks start flying when high levels of chakra are being used?


When people in Naruto begin using high levels of chakra--such as when Naruto's
Kyuubi chakra comes out, rocks or other pieces of the terrain begin
levitating, as shown in this picture:

![Naruto](https://i.stack.imgur.com/6hQ7s.png)

Some of the rocks are circled to make them clear.

Why does this happen?




The nerd in me says:

Specifically, in the case Naruto, the anime goes out of their way to explain
the chakras of the body. They even go as far to explain the flow of energy
through the chakras. As such, as they draw energy into their chakras (both
from inside and outside their body), debris (rocks in this particular case)
also have that "draw" motion upwards.

Furthermore, since the movement of energy creates heat (evident in what
happens later in the series when Naruto generates too much energy and he burns
himself - trying not to spoil here), it stands to reason that the air around
him would also heat up - so debris again would already with the added chakra
pull + the hot air above it + color air below it, would help to lift it off
the ground. Similar to a hot air balloon ([hot air balloons
explained](http://www.real-world-physics-problems.com/hot-air-balloon-
physics.html))

The adult in me says:

Dramatic visual effects. There is no rationale behind it, just a common theme
you see in animes. But it's fun to make up reasons why!

