Atmospheric pressure is about 100,000Pa which would result in a force of 100,000N on 1m2. If our bodies are subject to atmospheric pressure why aren’t we crushed by such a large force?

Answer 1

As a fluid, air flows around us and tries to crush us in. Fortunately, there is typically just as much pressure inside our body pressing outward as there is air pressure outside our body pushing inward. They typically cancel out, meaning that there is no overall force on us and we don't get crushed as the net force is zero.