People who are burning 1000+ calories a day

If I see a diary where someone's burning 1000 cals a day and consuming 2500, I'd be more inclined to believe the burn is truly that high. Haven't seen it yet.

i eat some not all. I try to leave at least a 500 deficit

i eat some not all. I try to leave at least a 500 deficit

In addition to the deficit that is already built in? If you have MFP set to lose a pound a week, that's a 400 calorie a day deficit already built in.

My half marathon I ran Monday only had me burning 1200 calories. I am a fairly petite girl, but I had to work hard for that calorie burn! I use my heart rate monitor that was calibrated by an exercise physiologist using my measured resting metabolic rate, my measured VO2max and my lactate threshold. I just don't see how someone doing a few miles or an hours worth of working out has that kind of calorie burn unless you are humongous!

220 lb x running 6.0 mph = 1000 cal/hr

That's a constant effort. Which is why, even if someone is even heavier, it is virtually impossible to burn 1000 calories in an hour of Zumba or any other exercise class.

Yeah, but 220 lb x running 5 mph treadmill at 5% incline = 1050 cal/hr. While I don't disagree that it's hard to burn 1000+ calories in an hour of Zumba or some other exercise class, I do think that it's easier to burn 1000+ calories for larger people than most people think.

Most exercise days, I post 800-1000+ burns (most days of the week). I eat a lot of those calories back. Going by my MFP net stats for the last 8 weeks, I should have lost 10 pounds. I've lost more than that, but since I know all of that isn't fat, by using the same bioelectrical impedance device under the same conditions, I've lost enough body fat % to equal 9.7 pounds of fat. I know these fat calculating devices aren't accurate, either, but I do recognize that they can be fairly accurate in tracking changes in body fat % when used under the same conditions repeatedly.

Yes, I use the level running speed because it's a simple reference point and something that the average person can relate to rather than saying "10 METs" . There are a number of speed/elevation combinations that would result in the same intensity.

Just to clarify, when I refer to 1000 calorie workout burns, I mean 1000 calories in a hour, not for the whole workout (which I realize is somewhat different from the thread title).

To further clarify, for me these are just fun academic discussions. There is absolutely no special value in being able to burn 1000 calories in a hour---it doesn't make one a better person, doesn't mean someone is "tougher" than someone else, or anything like that. It comes from the random intersection of mass and fitness level. It is only noteworthy because it represents a certain "sweet spot" of fitness and size that is somewhat uncommon--although certainly not rare.

The only other reason I bring it up is because the widespread use of HRMs for calorie estimates has totally distorted the facts on this subject and has led to many erroneous beliefs, as well as widespread acceptance of excessive calorie burns that aren't accurate.

So, in this thread, we've had:

My half marathon I ran Monday only had me burning 1200 calories.

I ran 22 miles yesterday. Burned 1900 plus change. Argue with my Garmin.

In both cases, a) GOOD SHOW! and b)close enough for government work:

13.1*90 = 1179

22*90 = 1980

To runners and walkers = multiply your distance * 90 (woman) or 110 (man). This equation works. Use it.

Bikram (yoga in a 105 degree room) can burn a ton of calories in a 90 min sesh. I weigh 118 lbs and burn aprox. 950 cals per sesh. If you weigh more you burn more. Be warned this is not deep breathing yoga, this is cardio and strength yoga.

What's a sesh?

Session.

So, in this thread, we've had:

My half marathon I ran Monday only had me burning 1200 calories.

I ran 22 miles yesterday. Burned 1900 plus change. Argue with my Garmin.

In both cases, a) GOOD SHOW! and b)close enough for government work:

13.1*90 = 1179

22*90 = 1980

To runners and walkers = multiply your distance * 90 (woman) or 110 (man). This equation works. Use it.

It works if you are a petite woman at or near goal weight. Otherwise, the METs required will be higher for taller, larger people and will also depend on the incline.