Also two things to remember when working out: intensity and consistency. You can have intensity doing HIIT which is high intensity interval training. It is very effective in burning calories in a short period of time. But it is not recommended to do HIIT more then 2 or 3 times a week. You also need your long slow cardio days. Consistency in working out and sticking to your food plan is also critical. I know several people who are in FA, Food Addicts Anonymous, and they have lost incredible amounts of weight in a short period of time by sticking to their food program. They have an incredible support system.