Smart coachingheart rate zones the default heart rate zones are divided into five zones based on the percentage of your maximum heart rate very light 50 60 hrmax light 60 70 hrmax moderate 70 80 hrmax hard 80 90 hrmax and maximum 90 100 hrmax you can also define the zones as you want training benefit motivating feedback thats delivered straight to you immediately after exercise so if you want to know the effect of different training sessions this feature will tell