That's about right. It's in 500 cal range for me also. Intervals is my fav Chalean work out. I'm doing Insanity right now.

I did the 45 minute Interval workout, and it said I burned 560 calories!

Just did intervals today and my HRM registered 421cals - I have a Polar FT60

This is really having me think I need to get a heart rate monitor! I am convinced that I should be burning more calories during the strength training workouts than what MFP says.

If you get one, please invest in a decent one.

I got the fitbit which is supposed to be pretty good although not necessarily as accurate as the bodybug. Fitbit only costs $100 and has an aweseome interface that syncs up with MFP. I have only done one workout with it so far as I pulled a muscle in my leg but it seems pretty accurate.

A BodyBugg or BodyMedia Fit is meant to be worn all day to give you an idea of how many calories you burn overall. It's a WONDERFUL tool and I absolutely adore my BodyMedia Fit. I got it on a special price during a marketing promo but I see that Costco is selling them now for highly discounted rates with subscription packages. My BMF is super comfy and I don't even feel it anymore. The first two to three days were an adjustment because I wasn't used to having something on my arm and if i wore a tight shirt, it was visible underneath. But then it didn't bother me.

I use a Polar FT7 HRM when I do cardio. Just so I have a quick calorie burning count to add to MFP. Otherwise I could just see what my BMF says but that always shows up a little on the lower end. I could probably not wear the HRM at all but I do like to look down and see where my HR is so I can be sure to adjust my level of intensity if necessary. I have noticed though that my HRM shows I burn considerably more than my BMF shows during a cardio workout. I'm really not sure which one I should default to during cardio as the BMF doesn't measure heart rate at all but it is so accurate in measuring everything else. I imagine the HRM is too high...but since I don't rely on that for my calorie guidelines anyway, it doesn't matter too much for *me*.

The healthier you get the harder it will be to get your heart rate up high and sustained. Distance runners have trained their cardio systems to be super efficient and can handle these runs without getting really high. Those just starting out running, however, see their HR soar and think they're gonna die after ten minutes. LOL! So, by doing cardio often you will condition your body and it will eventually become more efficient - which ultimately means less calorie burning overall showing on the HRM. Typically heavier people or those very out of shape will show really high burn rates during exercise....more fit folks will show lower burns in the same time frame. As with anything, there is always a measure of inaccuracy to be accounted for so just be sure to fuel your body with good foods, exercise where it is slightly uncomfortable but not unbearable, and do a wide variety of workouts to keep your body always guessing and adapting.

Wow! You all burn soooo many calories! Way more than I expected!
If I burn like you, it means I'm probably undereating :blushing:
I ordered a Polar FT60 and will receive it by the end of the week. Can't wait!

Burn Intervals is a killer..lol!

Enjoy your Polar!

Thank you! I just received it today! Wow! I it!
It's like a mini computer!
I did Burn Intervals and burned 433 cals!!! That's way more than I thought!

Burn Intervals is a killer..lol!

Enjoy your Polar!

Thank you! I just received it today! Wow! I it!
It's like a mini computer!
I did Burn Intervals and burned 433 cals!!! That's way more than I thought!

Nice job ladies!