Yes, I think that's part of the success. (Like when you haven't eaten all day and are 'starved', but you get full really fast since your belly has shrunk.)

It's okay to have a little bit of a calorie deficit on non-fast days, as long as you're eating enough to let your body know that it doesn't need to conserve for another fast. I eat a little less than maintenance cals (plus any exercise cals) on non-fast days and that's working well, so far.

If you're concerned that you're not eating enough calories, you can switch some of your food to higher calorie (but still healthy) items or eat more often on non-fast days, so that you're not feeling stuffed.

mrsgreen5686 wrote: »

I eat around 1200 to 1400 calories on non fast days. Is this too little? I feel full all the time from it..

I'm not the expert here, but I don't think that would be too little, especially since you're so close to your goals.

And, what you're doing seems to be working well for you.

One thing I've done is to set my goals to 0 pounds per week and the activity level to sedentary. When you do that, MFP will tell you what your maintenance calories are. They're not perfect, of course, but it will give you an idea of basically where you should aim. I try to eat a little lower than the maintenance calories on non-fast days.

Oh, one more thing I just wanted to clarify... I spend quite a bit of my day sitting, so my 'average' day is pretty sedentary. If you're usually very active throughout the day (not counting your workouts), your activity level might be different than mine. Or, if you workout a lot but don't usually eat back exercise calories you earn, then you might want to increase the activity level, too.

I've found less appetite on feast days has been a bonus of the IF lifestyle.

I would never push it to the point of being so full that I feel sick

Make sure youre getting your nutrients though- protein, fiber, calcium, etc

And never go under 1000cal