How do people burn 1k cals?

it really depends on how much you weigh and what your average heart rate is. MFP compiles all exercises you log throughout the day and just totals everything up so it looks like a lot was burned in one workout. Plus I think a lot of people are using the MFP estimates for calories burned and they tend to be a little high. As long as you are getting adequate calories and are working out 3-5 times per week you'll do well. :flowerforyou:

Are you making sure it just says, "x" burn "x' amount of calories doing "x"? I made the mistake of thinking all the exercising was being done at once when it actually says "including"...which meant the total calories burned was from more than one exercise session. I got so mad seeing that someone burned 800 calories on a 45 minute walk!! I think some people also put in numbers that are way too high!

I hear you and totally understand! I run 4 miles, 5 days a week (45 minute run) and am lucky to burn 300 calories. I know body size and weight has a lot to do with the amount of calories burned and I am fairly small (5' 2"/120 lbs). So I'm guessing those who can burn 1000 calories plus during a one hour workout must be a larger person than I. :flowerforyou:

I play sports for hour at a time non stop, and I can say that I definitely can believe that I've burned over 1k calories in an hour. Ultimate frisbee is nothing but non-stop running. Sports are when I can feel the most cardio burn, two nights ago a rang my shirt out from the sheer amount of sweat, halfway through the night.

Totally late to the conversation - but I also think that you are not burning a gazillion calories since you are 5'-2".

As someone 5'-0 1/2" tall, not only was I sad to see the low burn numbers, but I was also initally shocked by the palty calorie allotment for folks my height.

How did I end up here? Apparently I was eating the # of calories normally allotted to a 6'-0" man... :laugh: :noway:

The better shape you are in the harder it is to burn calories. Your calories burned is based on how high your heart rate gets. The higher the HR the high the calorie burn will be. The more you workout the better your endurance will get. There are supplements you can take before a work out that will help you increase your energy level for workouts. My trainer has had me try some. I wouldn't fret too much. What a lot of people don't understand is there are different workout zones. The lowest zone is the fat burning zone and you will burn less calories in this zone but a higher % of them will be fat calories. The higher your heart rate gets the more calories but the number of fat calories decreases. For example, someone who burns 1000 calories may have only burned 20 fat calories while someone who burned 200 calories burned 100 fat. It just depends on what you are looking to do. You are supposed to train in all 3 zones throughout the week.

Burning more than 400-500 cals in a single exercise session is largely BS if done by anyone that hasn't had endurance training or supplemented energy.

Even the most hardcore athletes drink gatorade and such for the sugar and calories.

Everyone else can say what they want... but go beyond the 4/500 mark and you'll probably 'bonk'... runners term for when your body runs out of a ready supply of energy.

That being said, as you get in better shape you'll be able to run faster and farther every time! It will ALWAYS take more than an hour's work to burn 1k.

For example, I usually get through about 1200 during a rugby practice. BUT of a two hour practice, I log 90, because I KNOW I ain't running my butt off for the full two hours.

I have a hard time believing anyone actually burns 1k calories in an hour doing anything. I'm not calling anyone a liar, just saying I find it hard to believe.

I don't know what type of cardio you are doing, but if you can't complete an hour perhaps you should try interval training instead of straight hard core cardio. I can easily do an 1.5 hours of Zumba (well, kinda easily) and once completed a 2 hr Zumbathon (THAT was hard). But I couldn't run for 1hr straight unless I was being chased.

Like me, you are a shorter female. We burn less calories than other people. Its because it requires less for us to get going. It unfortunately means we don't get to eat as much as a 6'11" male. To me, its all good. On me (and i bet you) 4 pounds is literally the difference between pant sizes....Taller people, it could be anywhere from 10-15 pounds. Its all relative!

Btw, I have done Insanity and P90x. In the last couple months, as you can see I only lost 12-13 pounds, but I went down 2-3 pant sizes....I actually can't even tell you what size I am anymore because I can't wear anything size 0 without a belt. I am not bragging, just trying to prove a point.