As per experts, not feeding your taste buds onboard actually reduces the jet lag, which you may experience during and after your flight journeys.
Travelling on a high-altitude zone does great damage to your body which includes shutting down of the digestive system. Though after landing the metabolism process starts, it is advisable for the passengers to restrict themselves to water.
Body starts working hard to digest the food you intake in the course of your journey. Consequently, passengers feel more tired and exhausted.
Remedy: Skip the meal and be more alert from next time you go on a flight.
Usually most people overeat because it is a diversion or a way to pass the time. Even the best plane food is over-salted and preserved, so it can be microwaved.
All passengers are strictly advised to eat something a few hours before getting into the flight, otherwise you are compelled to satisfy your hunger by drinking water alone.