Heart Rate / HRM
How accurate are these? I've got one (York something) and it seems accurate for the heart rate - but I wore it for a run the other day and it said I'd burnt over 620 calories - I ran 15mins, walk 2, run 15, walk 3, run 10, walk 10. Seems like far too many calories for an hour, and I'd only run about 4.5miles. I wonder if…
