I'm actually doing that today. I had half a salad for breakfast/lunch (200 calories) so I can have steak and maybe potatoes tonight. I started a new job today so I wanted something fancy for dinner, and in order to do that I have to allot my calories correctly.  However, this is absolutely not what they're talking about lol. They're talking about going to an all you can eat buffet and just gorging on whatever the fuck, and then eating normally after that somehow. So, there's that.