How to Fast Without Getting Hungry or Thirsty

Firstly, I know how insane that sounds. Many people reading this may well be Muslim, and let me assure you, this does not work for Sunnah fasts or Ramadan fasts. Because Islamic fasts are specifically designed to make sure that you do feel hunger and thirst. There is no way around the inherent challenge in the pre-dawn to sunset, no food, no water fast. However, a lot of people these days are into "intermittent fasting" as an incredibly intelligent way to lose a lot of unwanted body fat, quickly and effectively.