How does participating in an impact exercise such as jumping rope affect you?

a. it decreases your chance of injury.
b. it increases your contraction rate.
c. it decreases your flexibility.
d. it increases your bone density.

When do most people who become addicted to tobacco start using it

Which of the follow is good way to gauge musculature endurance?

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above