Introduction
I recently developed something called cardiophobia which, despite the cool-sounding name, just means that I'm often anxious that my heart is beating too fast, that I'm at imminent risk of having a heart attack, that my heart rate will elevate and never come back down, etc, etc. It's been a very fun time inside my head. I don't share that just to gain your sympathy. In fact, if you're reading this, I would think we either are friends in real life and thus I would hope I already have your sympathy, or we're complete strangers, in which case, I don't expect it. I share this because one of the recommended ways of dealing with such a mental ailment is to exercise regularly- primary, to walk. I recently learned that the city I live in, ever proud of its arboreal heritage, maintains a list of the biggest tree of each of a list of the 59 tree species within city limits: from the sturdy American Elm ( ulmus americana ) to the exotic- and delightfully mononymous- Z...