I'm not on any special diet other than a weight loss diet (ahem. What can I say? I love food and don't so much love sweat...).
Have started to drink protein smoothies for breakfast, and found it quite a helpful habit to have. Not really missing out on good stuff, because breakfast is my least interesting meal of the day anyway. And I can pack in a LOT of good stuff: besides my protein powder, typically a couple of cups of spinach or kale or other leafy green, and a banana or some frozen fruit.
I am quite happy to stick with this, but if any of you have green smoothie ideas that you really like, I'd love to hear about them!
Note that because I am rather weight-reduction focused right now, I will tend (only tend - not so strict) to prefer the smoothies that are full of water and ice cubes, rather than, for example, peach nectar or mango puree.
smiles and thanks!