When a muscle tires out after only a couple of contractions, what can you do to prevent fatigue? ?

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

The structure shared between the male reproductive system is the

What nutrients prevent osteoporosis? a. all vitamins and minerals b. calcium, vitamins c, d, and k, and magnesium c. protein d. carbohydrates