On a day where I’m only doing a HIIT workout involving sprints, what type of peri-workout nutrition is needed?
It depends.
I did HIIT work 2-3 times a week in my last contest perp. Like most people, I did HIIT to lose more fat. Since MAG-10 wasn’t available then, I pulsed with 12g of hydrolized casein 15 minutes before the training session and drank water with 20-30g BCAAs and 5g Citrulline Malate. The idea behind it was to actually support muscle growth and still benefit from the fat-loss potential of this kind of exercise.
This worked very well for me. For my next prep I’ll do the same but with MAG-10 only.
If you do your HIIT work jsut for the sake of cardiovascular training and are looking for best possible performance, you could add carbs prior to the sessions. Like one FINiBar -20min. Or even some dextrose mixed into your MAG-10.
Don’t take the carbs if you are looking for maximal fat loss, though.