Core conditioning looks to improve
a. stability that comes from the trunk and the spine.
b. the ability to catch.
c. how well a person can stretch.
d. strength in the quadriceps and hamstrings.

Hand washing is an important behavior that can cut down your chances of becoming sick with a communicable disease. select the best answer from the choices provided. t f

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

John is jogging on a winter day. the outdoor temperature is 31° f. yet his body temperature is 98°f. which term best describes the process causing this difference in temperature?