how about protein with fast carbs (glucose)?
Well protein with glucose should be ok, but then again, I feel
that protein is best used to build muscles, in this case, HIIT
doesn't really build any muscles, so you're kinda wasting your
protein anyway. However, I've read somewhere that its actually ok
to take protein for recovery, but protein is expensive to me since
I'm not working, so I'll avoid taking protein after running.