Because you yourself know you're going to tickle yourself so it's no surprise so you don't feel that tickling sensation
Jaun more than likely has asthma.Asthma is a condition that makes your airways narrow and swell produce too much mucus making your lungs very sensitive and can make it very hard to breathe in certain conditions
As we can see we already have the Symptoms,and,triggers that Juan suffers from.
hope this helps :D
How many weeks pregnant are you?
Telling you what's wrong, when it happened, and what they did prior to something being wrong.