If you do your Workout without eating any Carbs.
Coffee with some MCT Oil or Grass Fed Butter, will give you Focus and Energy.
And a 5,000 Mcg Sublingual Methylcobalamin (B-12).
This will also Boost your Mood, give you even More Energy, and Support Healthy Nerve Function.
I will occasionally add in some Beta-Alanine, if a Previous Workout has me Very Sore.
As Beta-Alanine is Great for DOMS (delayed onset muscle soreness)......................... JP