What makes you say that? The first time I even heard of IF they were recommending 8 hours a day. I know there are different formats but 8 was definitely within IF
Sorry I was wrong to say that. What I meant is that 8 hours is usually considered a minimum to give the insulin pathways enough time to rest. Especially if you're trying to tackle pre-diabetes etc. I am suspicious about this study, because of where it's coming from. I guess the real problem is not enough is known about this whole area.
the most basic is 16+8 split, there 8hrs is the eating window. This equates to skip breakfast and no late snacking.