Our lungs are not in our stomach, so how is it possible to expand our stomach when breathing in?

Question

What exactly is happening when we expand our stomach when breathing and what specifically are we doing differently when we breathe through our chest?

In: 4

Answer 1

When we inhale lungs expand downwards, so stomach gets pushed a bit outside. When we exhale lungs come back up and stomach can return back. With deep breaths effect is bigger and more visible, than with shallow breath.