A $22-$yr$-$old recent college graduate is joining a gym. Since becoming an accountant $6$ months ago, she no longer walks across campus or plays intramural soccer and has concerns about her now sedentary lifestyle. Although her BMI is slightly above normal, she reports no significant medical history and no symptoms of any diseases, even when walking up three flights of stairs to her apartment. She tells you that she would also like to begin playing golf. $($Use this case study for Questions $1-5)$