When I say calculated max heart rate I am talking about that formula where you subtract your age from 220. The walking breaks only last 1 minute so they aren't very long. I am just aiming for eventually doing a half marathon, I don't have anything on the horizon yet and have no clue how long it would take me to run it right now.
I am mostly wondering if it is better to keep my heart rate in a target range or is it better to push to get better and increase my cardio?
My son made this for me: