See the problem with a severe calorie deficiency isn't the calories themselves... it's the fact that it's very easy to hit malnourishment via micronutrient defi

See the problem with a severe calorie deficiency isn't the calories themselves... it's the fact that it's very easy to hit malnourishment via micronutrient deficiency. Eating a handful of multivitamins will help, but it won't solve the problem in the long run -- there are a lot of micros! (I use Cronometer for diet tracking, highly recommended, they track around a hundred nutrients) The hunger goes away once your body realizes your feeding schedule, I've found. For instance, I skipped breakfast (no food till noon) for a few months. For the first week, there was hunger in the morning, but afterwards by body just stopped requesting food before noon. This is probably similar to how keeping a consistent sleep schedule helps you not feel like garbage when you get up in the morning. Regarding exercise, I completely agree, but I start my feeding cycle early -- I do my cardio (running/swimming) first thing in the morning, fasted, then eat my first meal immediately after. The routine works great and has a major impact on my energy levels for the rest of the day.