I wonder if someone can offer some advice or put my mind at rest at least! I have been running for about a year (just for enjoyment, fitness etc) and have received a great Polar F11 HRM for Christmas. I performed the 'fitness test' which said I was of an elite standard (suprising but great!) and calculated my heart rate as such. However on my first run I had not reached the first half mile before my heart rate was sky high (180 ish) and the HRM was instructing me to slow down. Is this normal? I didn't feel out of breath or anywhere near a decent pace. Help! I have gone from very motivated to worried and disheartened in one easy step.