Almost everywhere
FWIW, I'll offer my opinion about leucine vs BCAA's with regard to growth specifically. No time for a long winded post, if anyone is interested they should look it up though. Super short version - to flip the protein synthesis switches on (make muscle mode) go with leucine alone vs all 3 BCAA's. Leucine is what does the trick and the other 2 fuck it up by competing with the leucine thereby wasting some cash, effort and time. I've probably posted about this here before, Layne Norton may possibly know more bout it than me lol.
So for me - 5g leucine before protein lacking meals max 2x a day, Flavored EAA's instead of MIO in my water jug probably totaling 20g/day.
Does it help with soreness? No fucking clue, I do far too many things in pursuit of a pain free life (or minute
) to be able to tell what's doing what unless it is effective enough to stand out. Massage, handful of painkillers, 7 minutes with a good woman in my lap etc...