This is just speculation on my part, as I am by no means an asthma expert, but I wonder if it has to do with specific asthma triggers, especially stress.
Hugs and/or pressure have been shown in some studies to slow breathing and encourage deeper breathing, lower blood pressure and heart rate, and release calming hormones in the brain.
So, if someone is perhaps extremely anxious or having a panic attack, and that in turn triggered an asthma flare up, those things *may* help the person to calm down, focus on their breathing, and not make the attack worse.
What do you think, Leon? It's okay if I'm completely wrong. In fact, I expect it. 😉 -Melissa, asthma.net team