What are the two important parts of physical fitness program? A. Skill-related and health-related B. Physical-related and mental-related C. Heart-related and skeletal-related D. Cardio-related and strength-related**************
This varies on the individual of course and what they're trying to achieve, but in general "D. Cardio-related and strength-related" would be the best option since both require separate approaches to the workout.