I started using a Polar hrm and have noticed some interesting facts (or rather observations).
When riding on the weekends for training rides, I tend to stay 10-15 bpm below my buddy's heart rate when exerting the same effort. I attribute this to commuting the last 2 years (on my third year this month). I should also point out I am 60 pounds heavier than my buddy too.
I have also noted that my commute in to work has a slower average heart rate than my ride home. Of course, my average speed in is slower too! For example, Ride in: avg speed-16 mph, avg hr-137. Ride Home: avg speed 16.5-17.0, avg hr-148. Is a half a mile per hour speed average that much of a difference?
Anybody else notice any other interesting facts or observations on heart rates and how commuting has impacted (for the good) your heart's health?