My resting heart rate was 64 when I started. Now it is 59. My heart while doing the jubilee shuffle jumps from 80 to 140 back to 60 up again. its frequent throughout my cardio. any suggestions?

As long as you know that you are steady in your body movement and motion, a fluctuation of that amount is usually a defect in the heart rate monitor or machine. Stick to the basics when you should be able to talk and not sing...stay steady.