I had trouble IFing before, I was too sick to get the ketosis going; I would eat what would normally be a fine low carb meal, and wind up starving. Skipping a meal, which used to be easy, became very difficult.

Then, as the effects of my cortisol resistance worsened, I had no appetite. I lived on cold cuts and ice cream because they were the few things I could eat.

I was taking anti-inflammatory herbs, Devils Claw and White Willow, to improve my sleep. Switching to niacin got me the same benefits without worrying about losing their effectiveness or possible NSAID-like side effects.