Heart Rate Trouble
I'm doing my first long distance triathlon this year and within my training plan I have a few long bike brick sessions and a middle distance race. I've chosen to follow the Don Fink training plan which uses the heart rate training method, which is great and has been working very well. The issue I have is that whilst I can keep my heart rate in Z2 during either my long bike or my long run, whenever I put a 60 minute run on the end of a 4 hour or more bike I cannot get my heart rate to stay in Z2 even when I slow my pace right down. I raced at the weekend and on the run my HR shot up to Z4-5 and was rarely seen down in Z3! Not sure if I will make a full marathon like that. Am I doing something wrong?