Took a long walk this morning; only logged part of it. I turned MMW on and off during the walk. I mowed the lawn and logged part of it. I am already over 15k and logging has given me 521 calories. Between the walking and mowing, it was about 2 hours. 45 minutes of it (mowing) was strenuous; I live on a hill and the self propelled mower doesn't help as much as it used to. I think part of the problem is I go faster than it does. Anyway, calories for the burn seem about right.