Who REALLY knows..... I truly haven't MASTERED that yet.
In terms of excersie....currrently (because of time constraints), I work out AFTER work for about 1.5 hrs. I do my cardio first - elliptical for 35-40 min or the treadmill (15% incline at 3.5-3.8. I alternate my strength training (Mon - legs, Tues - arms, Wed - legs). Thursdays I do a class offered on our base called "Muscle Pump" which is an excellent total body strength training class.