For those of you that use Isagenix: do you have to use ice? Can you mix the shakes with water or do you use some kind of milk? I want to try them but I need to make sure they are reasonable for what I have accessible at work

You can use just water and ice or you can use coconut milk or any milk that you like; you can get a cup with a small shaker ball in it. That works well for the office, too.