A 69-71 is normal. Doing lots of cardio would probably cause it to fall. Many think the lower is better. My wife's is in the 50's. I'm in the middle 60's. As long as your does not creep up, you should be fine.
There was a 18 year old on here, and he was doing HIIT, and his resting heart rate was up into the 80's and used to be in the 50's. He really didn't want to quit HIIT, but he had to. His resting heart rate dropped after he quit.
My heart rate is around 110-120 when I'm lifiting weights. But for me there is a lot of drop off. IE during the breaks between sets. So my rate is up and down and up and down depending on the exercise. My fitbit gives me a generous in my opinion calorie burn between 200 and 300 calories.
Compare that to me power walking for six miles, where I burn 1000-1200 calories, and heart rate will average 130 bpm, with all of the time in cardio or peak heart rate. On my fastest walk I had 30 minutes of peak.
Any exercise can burn muscle. It just depends on your diet. If you are in a calorie deficit diet that is too low, IE too large of a deficit, you will burn muscle. The key to preventing that is eat enough, have a small enough deficit so your body burns fat, and not muscle, and weight training. Your body burns unused muscles. So if you exercise as many muscles in your body, over several days, it decreases your body's ablilty to burn muscle.
Weight loss is so very complicated. But I really think you need to do more cardio, and get your heart up into the cardio and peak range for at least 45 minutes, 3-5 times a week. You will see fat drop off.
If you can get 30-60 minutes a day, you'll get a boost. The more cardio minutes, the more often, the more fat you will burn.
Long story short, you're body burns glucose for energy to exercise. You body has a complicated method from figuring out where to get that glucose. First is the glucose in your blood, then the glycogen in your liver and your muscles. When those run out, then it has to convert carbs in your blood to glucose. Once that runs out, then it converts extra protein in your blood to glucose. After that is exhausted, then it has to convert FAT in your blood to glucose. Converting FAT to glucose is hard for your body to do. So burns FAT last. Runners, joggers, will sometime "hit the wall" and just run out of energy when they get to the FAT in their blood. Then once their body kicks in the fat conversion, they get a second wind.
Then once all the fuel is gone, then and only then does your body decide what to burn next. If you have a diet with enough calories in it, so your body doesn't think it is starving, then it will use stored fat to glucose. If you calorie deficit diet is too low, then you body will choosed to convert the protein in your muscles to glucose.
So to burn fat on you body during exercise, you have to run out of all of the fuel first. For most of this, this will happen around 20-40 minutes of cardio exercise.
So HIIT will burn through the fuels, and force you to burn fat or muscle. There are a lot of people on here that swear by HIIT. And others swear by Cardio. Either way, you have to get that heart rate up there, sweat a ton, and push yourself.
I'm assuming you are running a calorie deficit diet. General rule 250 deficit - 10 lbs or less. 500 deficit - 10-20 lbs. 750 deficit 20-40 lbs. 1000 over 40 lbs. So if you try to 10 lbs with a 1000 calorie deficit, you will lose 99% muscle, and 1% fat. If you do it with a 250 deficit, you lose something like 90% fat, and 10% muscle.
So watch out for execessive deficits.
John | Texas,USA | Surge | Aria | Blaze | Windows | iPhone | Always consult with a doctor regarding all medical issues. Keep active!!!
