I get a dry mouth if I climb a ladder or a tree, and once I'm 6' above the ground, I can feel myself start to sweat. It's not pleasant.
But I'm happy to fly a light aeroplane, I've parachuted, I've climbed up the side of a quarry, I've absailed down tall buildings, I've jumped up and down on the glass floor of the CN tower in Toronto, all with no problem.
