Does anyone know of a heart rate monitor that specifically does this: Say your target HR is a given band or zone, perhaps 115-125. I want a display that shows total elapsed time, inside, that zone. ...
My problem: For aerobic exercise, my target heart rate is 120. I aim to exercise at that level for say 30 minutes per day. Now, if I "walk as hard as possible" I only get to about 100, 105. ...