If it's a 10 hour window presumably most people are eating multiple meals, but it's not really underspecified since you can eat whenever you want during that ti

If it's a 10 hour window presumably most people are eating multiple meals, but it's not really underspecified since you can eat whenever you want during that time. There are other people doing 4 hour windows for IF in which case it's more like a single meal, but that's not what this study tested. (This is just explaining the idea, not advocating IF)