Natural Energy

, is energy that can be collected from the atmosphere and terrain. If one can collect the natural energy from around them and combine and balance it with the spiritual and physical energy that makes up their chakra, they can become sages and enter the Sage Mode, allowing them to use senjutsu. This method can be taught by the inhabitants in one of two legendary locations:



The people of Jūgo's clan have special bodies that are capable of drawing in natural energy. However, as they are unable to control the flux of power that comes with this, they are prone to randomly going berserk. Orochimaru also figured out how to draw in natural energy thanks to Jūgo and his discovery of the Ryūchi Cave, and has mastered Sage Mode, but was also unable to use it properly, since he didn't possess a strong enough host bodies to hold such power.

There is also an anime-only kinjutsu which draws natural energy into the user, and then releasing it in a devastating attack developed by the Tsuchigumo clan.

Trivia

 * Natural Energy seems to have some connection to Wild animals either making its user more appealing to animals or drawing them in.
 * Jugo, who absorbs Natural Energy often has birds perching on his body and is able to communicate with other animals. Though this does not often appear to happen while he is transformed.