1 If you're a beginner, start with 3 to 4 days of the cardio exercise of your choice, working at a level you can handle.  Add time each week to work your way up to 30 to 45 minutes of continuous exercise.
Center turkey breast on rack. Transfer to oven, and roast until juices run clear and an instant-read thermometer reads 165 degrees when inserted into the thickest part of the breast, about 1 hour and 20 minutes.Transfer to a platter, and let rest for 10 minutes before carving.enter turkey breast on rack. Transfer to oven, and roast until juices run clear and an instant-read thermometer reads 165 degrees when inserted into the thickest part of the breast, about 1 hour and 20 minutes.
Place the turkey breast skin side up in a roasting pan. Preheat the oven to 325 degrees. Add 1/4 cup of water to the bottom of the pan and cover the breast with foil.Cook a 4-pound breast for 1 1/2 hours and an 8-pound breast for 3 hours, 15 minutes.For turkey breasts in between those sizes, allow approximately 25 minutes per pound. The breast is cooked when the internal temperature reaches 165 degrees.reheat your oven to 325 degrees. Unwrap the turkey and remove the giblet package and neck bone from the inner cavity. Rinse the bird with running cold water and place it in your roasting pan. Add approximately 1/2 cup of water to the pan to help keep the turkey skin from sticking to the pan.