What about those times when it's just sort of pushing it? Like, I go to school at 7:00 and get a workout during school at about 2:00-3:00 would it still be effective if I didn't fridge it during this period?
Another question, since I perfer cold drinks, would it alright if I actually 'froze' it and just let it thaw during class?
I doubt it would make much difference, though personally what I would suggest is to maybe freeze it as soon as you get up until you leave, ie, dont freeze it too long. I wouldnt subject protein to any extreme in temperatures however I dont think freezing is an issue, i believe extreme heat is much worse.