I can't explain the tracker other than to say the longer time likely explains the difference for something like strength training. It is for this precise reason, and to make sure I get in good cardio for my heart, that I wear a heart rate monitor. But strength training for me doesn't really register a high IMMEDIATE calorie burn (though obviously it's good for so many reasons)- for example a 35 minute personal training session for me burns about 120-130 calories, and there is little rest time between machines.
And though I totally get the impulse to worry about the difference in calories (I may or may not have a spreadsheet to track my daily deficits and how much I 'should' have lost v. what the scale shows...), you really shouldn't worry about it too much.
Stick with your healthy eating and actions and you'll see and feel your progress!
Fitness Minutes: (697)
8/22/13 5:59 P
If I put in I did 8 crunches in 5 minutes it says I burned 14 calories. But if I worked harder and did 8 crunches in 1 minute I only burn 3 calories!? That doesn't make any sense.