I usually run on the treadmill at a 2.0 incline. That’s probably a touch low for the hill as I leave my ranch, but it’s a decent incline that helps keep me in shape. I worry about running too much higher.
However my son used the treadmill recently and I ran outside a bit, and when I came back to the treadmill one day, it felt funny. It felt like I was running downhill. Sure enough, I checked, and the incline was 0.0, which is slightly downhill on some treadmills.
I fixed it and everything felt fine, but it reminds me how far I’ve come. I used to run at 0.5, or 1.0 and struggle to run a mile and a half. Now I bang one out without thinking.