IF fits my natural appetite and is easy for me to adhere to. My problem with it is I've discovered eating a small breakfast (~250 cal) immediately when I wake up is the single greatest aid to keeping my sleep schedule stable. On IF, when my meals are at ~ 1 PM and ~7 PM, my tendency to sleep in/stay up/go on a >24 schedule is amplified.
If I instead do "morning IF" and just eat breakfast and lunch, I'm lethargic in the morning and afternoon and hungry to distraction in the evening.
If I instead do "morning IF" and just eat breakfast and lunch, I'm lethargic in the morning and afternoon and hungry to distraction in the evening.