Burning 1,000 + calories during a workout

I burned 1376 cal this morning running 12 miles in 101 minutes. That's a little over 13 cal/min. I'm not all that heavy either at 178 lbs. You just have to be in decent shape and willing to put in the work.

How do you know you burned precisely this much?

That's what I'm not getting, how do people "know" this?

I don't know if it was exactly that much but it was what the garmin calculated using the (claimed) most accurate HRM method available right now. Secondly, if I calculate it using MET values (which have scientific support) I get a value of 1567 calories for that workout. FWIW - MFP calculates using the MET values.

So I feel pretty safe in assuming it was at least 1376 if not several hundred more.

Why is this important? Because if you are burning 1000 to 2000 calories each day running you need some metric to determine how much extra food to eat. If you eat way to much you gain weight. If you eat way too little your training crashes.

Unless someone wants to volunteer to accompany me on all my runs with a metabolic cart I'll have to stick to the garmin.

I burn over 1000 when I do a 42km cycle... Takes about 90minutes

Daily commute by bike each way: 24 miles, 90 minutes and 1100 - 1300 calories as recorded by my heart rate monitor and other estimates (Endomondo, MFP).

I did a double-century (200 miles) on my bike last year over two days. My HRM recorded about 5000 calories burned each day for a total of 10,000 with a total saddle time of 13 hours!

How are people accomplishing this? The only way I am able to is by going on hikes for hours.

I have no idea either. I suppose a number of factors - some mistaken, some not. I've never even come close to that even on my best days and I'm a big girl. Maybe if I spent the entire day at the gym! :laugh:

On a Saturday that involves golfing, and high intensity Zumba, Im at about 1300 calories burned there. Thats just at my weight though - and carrying my clubs around a 18 hold golf course for 3 hours!

I always get sooooo jealous of my husband for burning nearly twice as many calories as me in the same amount of time, doing the same activities. Thing is, he is in much worse shape. For him, 15 minutes of moderately paced walking is as hard as my 30 minute speed walk.

Several people on my friends list frequently burn 1,000-3,000 calories almost daily, they all have HRMs. So i guess its possible but I recently read something about cardiac drift (A phenomenon in which heart rate increases over the period of exercise, even if intensity does not..,) So if you believe in this then it means some of these HRM numbers could be wrong. IDK So no matter what I only eat back half of my exercise calories back .

For me personally, I find MFP really give too much credit for my workouts.

I know for a fact I don't burn as much as this site estimates. I really push myself in my workouts and have NEVER hit 1,000, even when I workout for 2-3 hours straight. The highest I've got is maybe 875, and that was crazy hard.

Everyone will get various numbers as well since we're all different height, weight, and ages. Also intensity and time.


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My high-calorie burns in the winter are usually several hours of snow-shoeing or cross-country skiing. Three hours through the deep snow can burn a ton of calories. The post-workout re-feeds are continuous.

Hiking (in the mountains, not just walking) is also a big calorie burn because I'm out there for hours and don't tend to eat a lot on hikes.

On a more regular note, an hour of running (running 8-9 minute miles) can burn over 1000 at my body weight (190 lbs). That's a pretty draining workout, though, since the pace is relatively quick (I was a runner 20 years ago and am slowly trying to get back into it).

At ~220lbs and 5'3" I burn about 250 calories for a moderate 30 min on the elliptical plus about 480-515 calories doing a vigorous 1 hour boot camp (circuit training) right after according to my Polar FT4. That's the most I've gotten.

Wow, I can't even run for a minute. lol

Go running (at a descent speed) for an hour and its pretty easy to burn 1000+ cal

i eat at TDEE -20% (or try to) so i don't factor in my burned calories.

If you calculated your TDEE correctly, it factors in your burned calories. The T in TDEE stands for TOTAL daily energy expenditure... including exercise!

I burned 1376 cal this morning running 12 miles in 101 minutes. That's a little over 13 cal/min. I'm not all that heavy either at 178 lbs. You just have to be in decent shape and willing to put in the work.

How do you know you burned precisely this much?

That's what I'm not getting, how do people "know" this?

I don't know if it was exactly that much but it was what the garmin calculated using the (claimed) most accurate HRM method available right now. Secondly, if I calculate it using MET values (which have scientific support) I get a value of 1567 calories for that workout. FWIW - MFP calculates using the MET values.

So I feel pretty safe in assuming it was at least 1376 if not several hundred more.

Why is this important? Because if you are burning 1000 to 2000 calories each day running you need some metric to determine how much extra food to eat. If you eat way to much you gain weight. If you eat way too little your training crashes.

Unless someone wants to volunteer to accompany me on all my runs with a metabolic cart I'll have to stick to the garmin.

I'll have to look into that, because sometimes I log my workouts, see the calorie result, cry BS and cut it in half. I'm sorry, a one hour boxing work out is not 700 calories.

I'll have to check my HRM, I think it lacks that tracking ability. It is interesting, that there may actually be an accurate basis for the numbers provided.

The method used is from Firsbeat. You can read their scientific papers here: http://www.firstbeat.fi/physiology/heart-beat-analysis

The HRMs tha use Firstbeat are listed on this page - http://www.firstbeat.fi/consumers/heart-rate-monitors .

I don't know personally if they are really the most accurate but that is what they claim and they publically post the science behind that claim.

I had a polar ft40 which is a HRM that has a chest strap. When I started working out 40lbs ago, I would burn around 380 calories in 35 minutes on the elliptical. Since losing 40 lbs I now burn around 470-480. I attribute this to me being able to push myself a lot harder than I used to.

I've just switched to the BodyMedia Fit LINK, and I'm going to compare the two heart rate monitors to see how they compare to each other, and the machine.

Last night with the BodyMedia unit I burnt 668 in 50 minutes on the AMT machine.. A few weeks ago I wouldn't let myself burn less than 800 in a session, which I usually did in 60 minutes, so I'm assuming another 200 calories, or about 16 or 17 minutes wouldn't kill me.