Go green smoothies (Detox?)

I my smoothies. I usually have one after work. They make a great snack for me that holds me over until dinner. I add greek yogurt for protein. My 2 and 6 year old drink some, too, so they are getting some green stuff in them which is a bonus. And... since I am sipping on a smoothie after work... I am not sipping on a beer... or rum and coke... or cape codder.... or wine... or...