Question: I am unable to get my heart rate high enough for my VO2 MAx intervals. What should I do?
Answer: As long as you are going at a pace/intensity that you know you can’t maintain for more than 3-5 minutes, then you are right where you need to be….when using heart rate. If you are unable to hit your V02 Max power zones happens while using power as your guide, then you should cut the intervals altogether because your body will be caught in no man’s land and we won’t be developing the system these VO2 Max intervals are designed to target.