How many calories do you burn?

I'd burn a 726

But I guess it mostly has to do with weight, the higher the BMI, the easier it is to lose weight or burn more calories

Is the calories burned that MFP calculates accurate? Say I do my stationary bike for 40 minutes, MFP says I burn like 650 calories, but the display on the machine says I burn 500. Which is correct? The machine doesn't have any of my measurements.

Is the calories burned that MFP calculates accurate? Say I do my stationary bike for 40 minutes, MFP says I burn like 650 calories, but the display on the machine says I burn 500. Which is correct? The machine doesn't have any of my measurements.

because I have heard that MFP is a little high on the burns, I tend to take the lowest calorie count I get. Usually it is the machine ( both the treadmill and the seated elliptical at the gym ask for weight, the elliptical asks for age too).

stats from metabolic chamber for average guy.

sitting: 2cal/min
standing: 3cal/min
walking: 5cal/min

So for him 30min of exercise = 60calories from exercise only. And most everyone in here wouldn't be too far from those same stats. So the people claiming more than like 100 are 100% wrong. (though most think they are right due to misinformation)

Most people far overestimate their calorie burn from exercise, like exponentially so.

Here's a good example, going for a 45min run in the same metabolic chamber but different test, 45min averaged amongst 20 guys was about 420 calories burned. (metabolic chambers are 100% accurate, this was their total) That was at ~155bpm heartrate and 70% VO2 max. Compare those same stats to Heartrate monitors, and see what you get. the one I pulled up said 700 calories per min. I would imagine most of yours say along the same thing.

Congrats, now you know why to not worry about exercise calories so much.

As a general rule, if you want to know how much you're burning, start at 2cal/min for walking, up to 14cal/min for a marathon speed max cardio pace. (which most everyone on here could not hope to do) Most people will prob top out at around 10cal/min and work their way up as fitness increases.

Why the discrepancy in what HRM's report? Easy, they are all based on the same MET survey from like 50 years ago before metabolic chambers were able to show more accurate results.

http://en.wikipedia.org/wiki/Metabolic_equivalent

Moreover, even the definition of MET is problematic when used for specific persons.[4][5] By convention, 1 MET is considered equivalent to the consumption of 3.5 ml O2·kg−1·min−1 (or 3.5 ml of oxygen per kilogram of body mass per minute) and is roughly equivalent to the expenditure of 1 kcal per kilogram of body weight per hour. This value was first experimentally derived from the resting oxygen consumption of a particular subject (a healthy 40-year-old, 70 kg man) and must therefore be treated as a convention. Since the RMR of a person depends mainly on lean body mass (and not total weight) and other physiological factors such as health status, age, etc., actual RMR (and thus 1-MET energy equivalents) may vary significantly from the kcal/(kg·h) rule of thumb. RMR measurements by calorimetry in medical surveys have shown that the conventional 1-MET value overestimates the actual resting O2 consumption and energy expenditures by about 20% to 30% on the average, whereas body composition (ratio of body fat to lean body mass) accounted for most of the variance.

I've been taking it from the machine for the same reasons some of you said: I'd rather undershoot it and work harder than overshoot and end up eating most of what I burned!