Well, The RP based training is fun, but I guess I shall continue this in a normal and straight forward fashion.
The concept of the CFS is rather simple and based on 2 Laws. How energy moves through matter is the first one. They push each particle from one end to the other. Only when the end of that object is reached, the energy can be released. The second one, will be a law which is very simply explained, via general knowledge. Let's say, you punch a wall. The energy which will be released on the wall, will also be released on your fist, by the wall, just in the opposite direction. To be a little more specific "Every action, has an equal and opposite reaction". Now, let's say how this CFS works generally. As you stand in the ground, You are releasing a large energy on the ground, which is equal to your weight. This CFS works, by using momentary increases in the users weight using earth release elemental properties. This brief instant, of your multiple weight releasing on the earth, will create monstrous amounts of energy. You will then return the weight back to normal, however, the moment that the energy was released on the ground, the ground released the very same energy back to you. You shall use chakra now, and redirect this energy, to either one of your legs, and release this energy in form of a Kick. The inspiration of creating this CFS was the love for The God of Highschool and one special panel. I will show you the chapter if you are curious. But, this is essentially it.
So far, are we clear?