hi doc
got all my figures mixed up.
the last time i was in a gym they didnt have all this hi tech stuff!LOL
anyway im 1.72m tall and weigh in at 79 kilos and had my 43rd birthday yesterday. in the main ive been blessed with good health and fitness in my life but im getting to that age where you gotta work a little harder anyway i digress my MHR is 177 and so i calculate that the target heart rate is approx 143. is that the figure to maintain for the whole of the 20 minute session?
or could you suggest some other method