I figured it out. What the article refers to is a strategy to not sleep during the long flight but instead starve yourself so you stay awake. And then when you

I figured it out. What the article refers to is a strategy to not sleep during the long flight but instead starve yourself so you stay awake. And then when you eat, you basically reset your body clock to the start of a new day. I think this is very early research and not really applicable.