Last Saturday Tom and I went rock climbing "Via Ferrata" at Nelson Rocks, West Virginia. It's and "iron road" over the rocks using steel cables and rungs, plus a really cool suspension bridge. We both had a great time and finished the entire course. Tom is a natural at rock climbing (he we went to a gym a few weeks ago and really liked it), and had no problem with heights. For me it took about 5 rungs to get the hang of it but I never really felt comfortable, but that's ok because it was an adrenalin rush the whole time. I don't understand why we humans like to put ourselves into these crazy unnecessary situations, but it must have something to do with the brain chemicals.