Here's a question: Running is great cardio for working out the heart, but the regular muscles it targets are in the what?

Here are possible answers to this question:
- thighs
- legs
- movement
- use of muscles
- agility

I believe the correct choice is "legs", here's why:


the human leg, in the general word sense, is the entire lower limb of the human body, including the foot, thigh and even the hip or gluteal region. however, the ...