If the purpose of it is to imitate general "Chi enhancement" type abilities ala Dragonball's Ki, Nen, etc.,
Aah, ya got me. While I wasn't holding any one example in mind, that was kind of the idea.
Hmm.. How about.. fire, or wind? Make it a magic rooted in heat, or air pressure. Heat might work better. I'll have to change his backstory.. mmnn... Mmmm... Eeeh ..
We'll see. I may write something else