Hi guys,Some advice needed here. Possibly a question to Kiefer. I, to be safe, have no protein shakes before my workout and when I do take my protein after my workout it is Undenatured Whey Protein Concentrate. Is this a suitable protein and could I use this as part of a sustainer formula? Reason being, I don't have any hydrolosate and won't be getting any any time soon as my protein is a 5kg tub.I will be purchasing the isolate eventually but not till I have used my current batch. Hoping I don't need to buy the hydrolosate.