I want to do HIIT and my prefered method of cardio is jumprope. Problem is I don't have a timer to time the "hard" and "moderate" cycles of the intervals, and counting seconds whle I jump rope confuses my rhythm and makes me trip more often. So can I do HIIT on the jump rope using number of jumps instead of time? Something like this: 250jump warmup 60 jump HARD 120 jump moderate 60 jump HARD 120 jump moderate ...repeat for ~15mins... 200jump cooldown Would that give me the benefits of HIIT or what? If not, how could I do a timerless jumprope HIIT?