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.
1 Place the turkey into the oven for 2 1/2 hours. 2  By this time, the thighs should be about 100Â°F, but the breast should still be icy, around 25Â°F If you have an insert-and-leave-it type of thermometer (dial, or digital probe), insert it into the thickest part of the breast at this time. Preheat the oven to 325Â°F about 6 hours before you want to serve. 2  Line a rimmed cookie sheet (NOT a roasting pan) with foil and place a rack on it. 3  Unwrap the turkey and place it on the rack.