Answer:

Dr. K says that the workouts are intended to be 50/10, meaning that you perform 50 seconds of work, followed by 10 seconds of transition time between exercises.  It's okay if you need to take more time to recover in the beginning, just remember that you're building up to full intensity.  Naturally, results come fastest with the intended format, but you'll get great results either way. Just so long as you're sticking to the 10 min a day, 5 days a week schedule, it's perfectly okay to do an easier version of the same exercise (as long as you keep it at 9/10 intensity). The key to continuous fat burn is keeping the heart rate up, so don't be too focused on form. However, you should gradually work your way to doing the recommended form for continuous progress and avoid reaching muscular plateau. You can also integrate your favorite exercises into your regimen if you want- mixing things up is what keeps workouts fun, and the fun factor is the key to sticking to your program and achieving a smaller waistline!  ; )

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