Target heart rate is just one way to measure the intensity of your workout, and doesn't always work well for everyone. My suggestion would be to try a different method, such as the Talk Test or Rate of Perceived Exertion. Here's a link with more detail on those:
To hit the target heart rate he's given you, you need to up the level on the piece of equipment.
6/18/13 10:00 A
I've just started using my local gym. The instructor gave me a tour of the equipment and wrote a program for me. He said I should aim to get my heart in the range of 140-160 bpm. I went back the other day and started the program. I am really struggling to get my heart rate up high enough! (e.g. on the exercise bike, my program was, at level 5, to cycle for 1 minute at 90+ rpm, and then do 30 seconds at 50-60 rpm, and so on for ten minutes). My heart rate only just got to 140. Am I best to increase the level (on the machine) I'm working at, or to exercise for longer? I'm a distance person, rather than a sprinter- but I also want to burn the most calories possible in the quickest time. Thanks
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