Great advice. It is pretty easy to see where this makes sense. I know a lot of people who snack out of boredom, not even aware of how many calories they ingest simply because they haven't assigned a better activity for little pockets of time.
What to eat before and after your workout. I would recommend coconut or almond milk in place of the low-fat milk for the smoothie. Also, add in a handful of spinach or other green to make the smoothie even more powerful!