I've introduced a new Python constrict. We're using the triple quote here.

It's not so much psychological, it's vascular, and nicotine makes your arteries constrict.

Now, in a typical stress response, your heart rate goes up, and your blood vessels constrict like this.

On the left, it's when it's cold and the thermo bimetal is flat so it will constrict air from passing through the blocks, and on the right, the thermo bimetal curls and allows that air to pass through, so those are two different components that I'm working on, and again, it's a completely different thing, because you can imagine that air could potentially be coming through the walls instead of opening windows.