Going on the experience of my own body, the way your body uses calories is a big factor in feeling hungry.
When in a job that requires min 6+ hours of full on physical work. Not only am I burning calories like a lit match, I also do not feel hungry, when I eat meals I feel full quickly. So my calorie intake is not a lot. At times I've had to graze calorific food on an evening because I was continually losing too much wieght. during the day I can easily have 1 slice of toast at 5.30am and not eat again until 1.30pm even then it would be something like half a cheese sandwich maybe a full one or some sort of salad.
When I have a sit down job or not working.
I feel starving all the time. I feel faint and shaky if I'm not eating something every
hour or so, I get the stomach ache, hungry empty feeling. quite often I I'll feel fatigued during the day and wiped out.
So for me movement is absolutely key, I believe my body moves from burning consumed calories and constantly needing me to have easy use calories readily available for my body, To passing some sort of Wall (I hear 'The wall' used in marathon runners) Were my body switches to burning calories stored in my body. Once the switch is made hunger, craving, faintness are no longer a problem as I think my body is not worried about running out of instant calories.
Currently been furloughed I have piled on the pounds, and no amount of will power gets me to stop feeling hungry, shaky and faint if I try not to snack. doing a burst of exercise (an hour or two a day) does nothing to stop my hunger and fatigue.
I.Need.to.get.back.to.work. it's better for my health and fitness.