I have noticed that many people seem to eat snacks out of habit or boredom. They are not always eating because they are hungry.
I have been reading this board for a little while now and I have lost count of the amount of times I have read posts by people that are struggling with their weight but are also snacking. I believe the trick is to eat in a way that keeps your blood sugar stable whether you are trying to lose fat or gain muscle.
I find that when eating healthy lc meals, my blood sugar stays stable long enough for me to need just 3 or 4 meals per day and no desire for snacks. I only eat 4 meals if I'm working. My work is very physical so I burn a lot of calories. I will sometimes have a small amount of food at 4pm just to help me along until my evening meal. You could call this a snack but I only have it if necessary. The 4pm feed is the same kind of food I would have eaten at lunch but smaller. Usually something like chicken soup. Like I said before, this is only on some workdays.