So let's take a look at the following diagram, which describes what I just discussed. So this diagram describes the curve for Boils Law. So the y axis is the pressure inside the intraplural space and the x axis is the volume inside that intraplural space. And this curve describes Boils Law PV multiplied by constant, where v is the volume is equal to a constant, where vs the volume, and p is our pressure. So when we essentially inhale the diaphragm flattens down, the ribcage expands as a result of the external intercostal muscles contracting. And we basically move down the following curve from the initial point where we're fully relaxed to this final point on the curve where we're fully contracted.