alt Hacker NewsIsn't that an extreme version of IF?
I think the usual window is 8 hours, so people should first try eating between lunch and dinner, say 12PM-8PM.
A lot of people eat breakfast out of habit, and I found that once I got older, I just stopped needing it. It made me bloated and sluggish. You just don't need that many calories per day when you stop growing or not working in construction.
IF typically starts at 16/8 but 20/4 or 23/1 (One meal a day) variations seem pretty common too. A 5 hour window is not bad because that still gives room to get in 2 meals.