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Okay I need help
I normally have no problem training to a higher hR and have problems running at 70-75% hr which is 135-145...I can achieve this no problem even on hills!!
But when trying to training at 145-153 I just cant raise my HR anymore which is worrying me...take today second half of run needed it in higher bracket no way everytime I hit a hill it stayed consistant run on flat or downhill and I lose 3-4 beats and cant raise it again.
I know I am fitter at the moment but still this has never happened before I do have a hole in my heart and a mumur as well as asthma but never had this problem before ever in training.
Any ideas gratefully accepted