Hi Runners,

I recently purchased a heart rate monitor. I am 37 years old, and started tracking my workouts. I do a lot of interval training and noticed that my heart rate ramps up very quickly. I would expect my maximum heart rate would be around 183, but I've seen myself as high as 215 when I'm really pushing it. I hit 183 around 4 minutes and 30 seconds per kilometer.

I'm wondering if I need to worry about this high heart rate... I don't really feel that bad when I'm around 170-185, and around 185-200, I start to feel like I'm really pushing it hard.

Any other experiences or advice on this?