Which friend is experiencing an internal barrier to physical fitness?
O Mark lacks access to fitness equipment.
O Tyler has trouble finding a safe area to work out.
O Talia puts in only 50 percent of effort during her workout.
O Clark's parents fail to support his desire to work out.

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.

10. what is one long-term effect of tobacco use? changes in brain chemistry coronary heart disease decreased appetite increased heart rate

Justify the following statement: “diversity should exist in the workplace.”