5+ miles on a rolling (rather than hilly) trail; definitely got to go up some. Took it very easy. Mid-day so the heat was pretty much, "What's up, dude!" On my last loop, feeling nice and groovy, I come around and "What's up, dude," but this time it's a healthy, actually quite stunning, rattler. Second one in two weeks, different trails. Hey, I'm treading on their turf. I said, "hello," turned, and went the other way.
Feel great. Off to my son's science fair this early evening and then hopefully home to conduct my own "experiment."