Ken, you mentioned you monitor your heart rate on your fitness tracker. Which one are you using? I'm using the Fitbit Blaze and when I start sweating and moisture gets between the contact points and my arms, it stops registering on the device itself, so it's hard to see what I'm doing. I think it must register (or estimate) because when I sync to the app on my phone, it shows that it has registered something. Just curious if you have something that works better. I've thought about getting one of the chest straps that will report to any number of apps for tracking. Wondering if that works better.