When working out focus more on calorie burn then on what your heart rate is . Clorie burn elliminqates stored fat, Heart rate is important but until you condiction yourself to withstand longer more intense workouts forcus on calorie burn and when your able to. then focus on both at the same time.
I weighed myself 3/22 and then again on 3/25, lost 3.6 lbs. Well weighed mysel today (3/29,) fully expecting the weight to have come back and surprised lost another 2.6 lbs. This is unheard of for me. I have never gotten results like this. Although I have lost weight but usually it comes back