Sen is one of the most crucial elements to understand regarding martial arts. It is important to not only understand these concepts, but also how and when to utilize them. Aikido and Karate are examples of of martial arts which focus on this a lot.
Concepts of Sen in the Martial Arts
![Karate Aikido Sen Concepts](https://i0.wp.com/impulsemartialarts.com/wp-content/uploads/2021/07/Aikido-Karate-Sen-Concepts.jpg?resize=320%2C299&ssl=1)