Intermittent fasting refers to periods of not eating, cycled with periods of unrestricted eating. There are several versions, but dieters will often either eat just within a 12-hour time frame (e.g. eat between 9 am and 9 pm) or eat on alternate days (e.g. eat today but not tomorrow, or at least limit what you eat to about 500 calories). It’s a challenging diet for most people and may lead to overeating on both days.
Just One Thing to do: On alternate days, instead of fasting, make all your portions smaller than usual while skipping seconds and snacks. After a week of this, make this your daily routine.