Using the Runners World beginners schedule I could run 30 minutes without stopping in February sometime. However I lost motivation (probably because I didn't have a realistic goal). To try and motivate my training I bought a Polar M51 HRM. Using my new toy I set my activity level to 'High' and it predicted my training range should be 137 to 157 bpm (supposedly 70-85% of my maximum). I had a shock when I tried to train below 157 bpm as I was only moving at a very slow jog (covering 3.5 miles in 39 minutes).
Does this mean I have been overtraining previously (about 9-10 minute miling). I would like to do a 10K perhaps this year but if I use the HRM as a guide my pace will be very slow.
Can anyone give me any advice (and motivation).