- Every other day you eat only 500 calories. ("fast day")
- On the "feast" day you can eat whatever you want.
- You work out regularly whether its a fast or feast day
- You drink lots of water throughout.
The article states that fasting for half the week, essentially, is the optimal way to only take in the small amount of calories you need when you're dieting, without limiting yourself all the time. It found that the people that were eating this way would not overeat as much as you'd think they would on their fest days because they were becoming more aware of how it felt to be full and they'd stop.
I did something similar to this a year or so ago - it was called the 1-Day diet. It consisted of only protein waters (a specific concoction of protein powder, green tea, cinnamon, etc) drunk every 1.5 hrs throughout the day, with no other "real" food eaten on those fast days. You would do this every other day for a month for optimal weight loss. I lasted a week or so. I did lose the weight quickly, including inches, but I found that I became almost obssessive about food and would so look forward to my "days off" that I would binge on things that would make me sick. Then the following day, on my protein water day, I would feel sick from the day before and also be irritable because I was restricting my food so much.
So much of eating is psychological. Even if I wasn't hungry throughout the day, the fact that I couldn't actually chew food, real food, killed me! I had considered doing this diet again to see if I could stick it out, but I just hadn't gotten around to it.
I always wondered how healthy this approach was and I was happy to see that someone had taken the time to research the different ways to do it and had come up with compelling research to show that it actually was a healthy way to lose weight (as long as you aren't nursing, pregnant, ill, etc).
While 500 calories a day, every other day, seems crazy, I look at it this way: My salad at lunch is normally around 250 calories. I could eat a salad for lunch and then another salad at dinner. Sure, it won't be fun, and I won't like it. It will be a challenge. But what if it actually works? Now that I know its not detrimental to my health, I'm absolutely willing to try it again!
This week I have to go to training in Issaquah, which means I'll have to bring my food to work with me. This may be the perfect opportunity to try this. We'll see how it goes!