In this video by Sergei Boutenko he demonstrates how to make a green smoothie and explains the following key guidelines...
1 - Never blend anything except fruit, green leafy vegetables and water.
2 - Keep your green smoothie simple.
3 - Make your smoothie delicious and enjoyable.
4 - Rotate your greens!!!!
“# 1. Never blend anything except fruit….” I disagree. Smoothies benefit greatly from adding such super foods as ground flax seed, hemp seed, maca, acai, white chia, chlorella, etc.