Not exactly.

Really depends on what you are eating between fasts and what types of exercise you do.

If you just sit around not eating all day then break fast with sugary garbage and excess carbs you'll end up with less muscle and you may look like you've lost fat but chances are the fat has just moved to your organs instead of your muscles.

You gotta have an active lifestyle and eat healthy between fasts to lose fat without losing muscle.

And if you want bigger muscles you gotta eat more to sustain them.