Have a good trip, Myra.Measuring portions for various foods helps to keep one on track and in tune of the portion/frequency guidelines; so one does not have to second guess anything. ???In regards to proteins such as tofu or red meat, it can be a challenge intitially to realize how much 2, 4 or 6 ounces may be. ???This is especally true for those that eat out frequently, because many restaurants t