I know it's been briefly touched on above, but I did my first ever HR run last week. I'm not sure my garmin was all that accurate but I stayed in the aerobic/threshold zones (basically hovered around 165 bpm). Have to say, the run was so nice... no struggling for breath and actually enjoying it for a change. Is this an effective way of getting faster? It's no biggy, I just like to stay fit and healthy but usually I push myself a bit too much which actually makes me dislike running. I don't have goals as such because I only have chance to get out 1-2 times a week as I balance running with the gym.