You may be eligible to participate in a research study about the effects of Exercise and Metoprolol (a blood pressure pill) on a protein in your blood. This protein is related to heart disease. Eligible participants must be Healthy men and women, African American or Caucasians and have no history of diabetes, heart problems, or kidney problems. The study involves performing exercise, taking metoprolol, consuming prepared meals, and collecting blood samples. Participants will be compensated. Please e-mail Nehal Vekariya at nvekariya@uabmc.edu if you are interested.