Indication of a diet too high in carbs, leading to insulin levels being too high, leading to a crash in blood glucose, leading to feelings of cold and starvation. Which some people can, temporarily, white-knuckle self discipline thru, but most cannot.
My personal IF is based on not feeling hungry. Sure, I'm self disciplined and hit the gym and all that, but I don't need any discipline for my diet.
Self discipline is only useful for weight loss when food shopping, not when cooking or eating. I can't binge the entire pack of oreos if I don't buy a pack of oreos. And I don't feel hunger or hypoglycemic because I minimize my carb intake, which minimizes my craving for carbs.
If so many companies were not making so much money selling hyperrefined carb junk food, that stuff would probably be regulated as an addictive drug. Abuse of those products certainly kills people at a young age.
Checkmate.