Depends on where you are in the world, dinner at 5 would be really weird in a lot of places. Most restaurants would not even be open for another 2 hours

Even if you eat at home saying you have to eat before many people are off work seems like a rather arbitrary restriction for the sake of 2 or 3 hours. And I say that as someone who does sometimes eat earlier and often don't really have 3 meals a day.

The body doesn't significantly start burning fat for fuel until glucose stores are exhausted, which on average takes at least 12 hours of fasting. Every hour after is running on "fat batteries", so a few extra hours is the difference between zero fat burned and several oz of fat burned.

Well it's not weird anywhere in the US. Skip breakfast for a snack at 10 and push dinner to 6 and it's pretty average.

Fasting is not eating.

But sure, let's just change the meaning to "scheduling when I eat".

It's a place to _start_, once a person can handle that consistently, then more strict protocols like 18/6 or 23/1 are easier to do consistently.

Dinner has to end on or before 5. No calories from 5PM to 9AM.

That's not a fast, it's just eating less.

> Fasting is the abstention from eating and sometimes drinking. From a purely physiological context, "fasting" may refer to the metabolic status of a person who has not eaten overnight (see "Breakfast"), or to the metabolic state achieved after complete digestion and absorption of a meal.[1] Metabolic changes in the fasting state begin after absorption of a meal (typically 3–5 hours after eating).

https://en.wikipedia.org/wiki/Fasting