Rajah, Asana, and Pranayama yoga.
Mantra yoga is good as well if you are really nervous. It doesn't even need to make sense, just repeat the same rhythmic phrase over and over. Why do you think they do that in the military?
Breath (Pranayama), position (Asana), and thought control (Rajah)l yoga are specifically designed to lower anxiety and quiet the mind. Look into it. It not only helps before, but during and after fights.
I don't bounce or hop or any of that. All of my energy is to saved for, and used upon, my opponent. Nothing else exists. Once the fight is over, I don't bounce or hop or any of that either. I raise my hand, shake his, and go to the back.
In between these two events, I attempt to recreate the entire series of Jack the Ripper murders as many times in the shortest amount of time as possible, upon his face, until the bell rings.
So it goes.