I bought myself a big blender this weekend, makes the shake taste so much better.

Question is i pre mix whey protein and eggs 2 with soy protein and of course 1 table spoon of flax oil for my PWO, and i drink it 2 hours later.

I read that whey needs to be mixed and drink cause it loses a lot of its properties??????

My question is? is that true, what about the shakes they sell at the gym that are 30g of whey and come in a can?????