Re: Low Carb/High Fat Diets and Boxing/MMA etc
Experiment with both. It will come down to how you respond based on your insulin sensitivity (which should be pretty high due to your low carb background).
Personally, I prefer slow carbs before (so porridge or a sandwich) but depends on the duration of your session.
I'd be interested to hear how you get on.
Lifter, bare foot runner and founder of nuutrii
, a free recipe analyses tool for athletes.