How to Preserve Your Sleeping Window on International Flights

"I fast on domestic flights. If I fly anywhere in the continental United States, I fast on airplanes," he says. "Carps are bad in the air because as soon as you divert blood from your brain to digestion,. let's not forget, it's a 30 foot long tube." He eats fats and proteins on flights; carbohydrates at altitude are terrible for you.