Answer:
1. Measure of the health of the heart and blood vessels: cardiovascular fitness
2. A weight lifter's area of expertise : muscular fitness
3. Touching your toes : flexibility
4. Learning the positive benefits of exercise : understanding
5. A limiting factor that relates to the cost of activities : money
6. A limiting factor that relates to where you live : location
7. The exercise habits that you were raised with : family behaviors
8. How you feel about yourself and your ability to excercise : motivation