I haven't exactly done this exactly, but this smoothie on its own holds me over for easily 4 hours.

Last year I was doing a partial fast twice a week where I'd limit myself to 600 calories on those days. I'd have this smoothie mid-morning along with black coffee and water. In the evening, I'd have a large salad of 150 calories. (It's amazing how large a salad you can make on a budget of 150 calories if you get creative. For example, I'd use kimchi in place of salad dressing. Boy did my family hate me.) Anyway, I was definitely hungry by the evening, but I would estimate no more so than if I'd had it as a meal. One thing I didn't try was splitting the smoothie in two and consuming it as breakfast and lunch.

Out of curiosity, what was the reason for the partial fast? And how did it affect you?

+1 on the giant salad for minimal calories! If you don't use traditional, calorie packed dressings you can really fill up on a small amount of calories since lettuce, tomatoes and cucumbers are such low calorie foods.

Fast was just an experiment. A colleague had done it for a year and I was curious. I lost about 8 lbs over 4 months. Other than that, uncertain of health effects.

The idea for it and some health claims are in a BBC documentary you can find online: "Eat Fast and Live Longer."

> I'd use kimchi in place of salad dressing.

Whaaaaaaaaaaa? That's brilliant! Definitely going to try this.