This is a waste of time:

I’ve written about this before but it bears repeating:  Monitoring how many calories you burn during an individual workout is a complete waste of time.

That is akin to counting your calories at one meal but ignoring how much you eat the rest of the day.

If the goal is fat loss (it should be – I’ve never met anyone who wanted to gain body fat), then the focus shouldn’t be on the caloric expenditure of your workout.  The focus needs to be on your resting metabolic rate (RMR).  This is how many calories you burn at rest over 24 hours.

The point of an individual workout, and exercise in general is to raise your metabolism so you’re burning more calories 24/7/365.

That is a crucial point about health, fitness and fat loss that many people just don’t get.  Many people still focus on how many calories their workout expends with no concern for whether or not their exercise selection is ramping up the metabolism.

This is why (again) you can’t lose body fat by performing long duration “cardio”.  It’s not intense enough to raise your metabolism so your body stops burning calories as soon as you stop exercising. 

And unfortunately you’ll never be able to out exercise or out cardio your food intake.  Jogging two miles burns about 300 calories.  That’s a very small meal that just wiped away the caloric expenditure of your jog.

Make sure you choose exercises and workouts that raise that metabolism so you become a calories burning machine – you won’t need to count calories from individual workout.  And remember, genetics do play a role in your metabolism, but whatever yours is can be improved.  Your metabolism, to a certain extent, is a choice.