If You Are Just Starting an Aerobic Workout Routine, What

Multiple Choice

If you are just starting an aerobic workout routine, what level of intensity should you aim for?

A) your predicted maximum heart rate
B) 80% of your predicted maximum heart rate
C) 50% of your maximum heart rate
D) 40% for 10 minutes, 60% for another 10 minutes, then back to 40% for 10 minutes