Don't really like heights, for example, though I've done some rock climbing, climbed some light houses (Hatteras for example), and climbed the freestanding spiral staircase in the dome of St. Paul's in London, among other height related efforts. But I don't think I'd want to ride a mule to the bottom of The Grand Canyon, although it is otherwise my kind of trip. I'm somewhat okay with bugs and spiders if I am being careful, and snakes likewise at a distance. I'm careful about water, but accepting. I try not to engage my phobias; usually that makes you more vulnerable.