I guess the heat and humidity are taking their toll on me. I have been trying to jog slowly, but apparently not slow enough. I did two laps at my club the other day and my heart rate was 184 when I was done Of course it came right back down, my heart rate recovers well.

My trainer runs as well as mountain bikes and he told me that it was due to the change of weather - previously 2 laps only brought it to the low 160s... So I guess that I will continue doing what I am doing, slowly jog a few laps each time I go in hopes that my body will eventually start adjusting to this activity.