Why belly is the easiest part to get fat? I skipped workout for two days and I looked like pregnant.

It depends on your body shape. I gain weight in other places.

Because some of us have 3 stomachs

Everyone's bodies store fat differently. For me I can mostly on my stomach, butt and thighs.

Be aware that exercise isn't the only factor, diet is important too. Like I'm trying to lose weight and it's 30% exercise and 70% diet.