. So, how does Air Pressure 'works' on Earth. Would this right to say that, the air molecules present in the atmosphere are forced down due to gravity and thus applies force on every object downwards towards the Earth's core thus causing Air pressure?. Another question I would like to know the answer of , is how do we even maintain stability at such intense amount of force acting on us everytime? I mean our body exerts force from the inside resisting us from Crushing due to Air pressure, what about our own gravity which is trying to collapse ourself from the inside. How are we resisting that? Also, I've heard that after coming back from the space you're bone density is lessened and other factors happen causing you to get weak. So if we have less inertia we can't resist much to Air resistance, so can I expect that if someone/something with very low inertia is expected to get crushed by the Air pressure? If this statement is true then I guess we will get daily reports of "Air Crush", but it's not true.So how??