Great additional insight on why this happens @Jerry Shier ! And good reminder to always carry your inhalers with you, never know when you'll get a good laugh 😁

More specifically, laughing and crying can cause hyperventilation or increased breathing rate as Dr. James mentioned. But what really happens? There is drying and cooling of the airways that causes the muscles in the airways to constrict or narrow. A dose or two of a quick reliever should reverse this. This mechanism of bronchoconstriction is very similar to what happens with exercise so if you can warm up and control you breathing pre exercise one may prevent an event from occurring. As Dr.