This month I have started a JNL/walking/yoga rotation. Just like any exercise in other workouts that I find unfriendly for my knees, I jump on my rebounder and do plyos, tuck jumps, frog jumps, etc. in its' place.
I find doing those on my rebounder burns more calories and gets my HR up higher than trying to do the original exercise on the floor, since I would be trying to be so careful not to torque my knees.
My HR soars on my rebounder! I don't find it compromising the calorie burn at all - just the opposite.
I am LOVING JNL!!! I am so spoiled now from this format! My booty was so sore from Shoulder Shredder - still not sure how a shoulder w/o could make my booty sore for 3 days!!
These are definitely more total body workouts that work every muscle. So far, JNL hasn't gotten on my nerves....
yet.