Losing 40 to 60 pounds is a hefty goal and losing in 28 days is not realistic. If you are closer to an ideal body weight this goal is not recommended. This goal may be suitable for people who have higher amount of body weight to lose. However, losing in a very short period of 28 days is close to impossible. The only way to shed 40 to 60 pounds is through a set of rigorous exercises and a low calorie diet plan.
It is essential that you follow a low calorie and a low carb diet plan to lose 40 to 60 pounds at a faster rate. When you join programs like Nutrisystem, Jenny Craig, Medifast, etc you will be able to lose up to 2 lbs per week in a safe and healthy manner. Nutrisystem helps its followers lose up to 13 lbs and 7 inches in the first month of following the Turbo 13 plan which is its newest launch. The Turbo 13 plan delivers a Turbo Takeoff kit in the first week which includes specialized meals that accelerate the weight loss process. Go through the nutrisystem and jenny craig comparison in prodiets.org that would help you to decide your choice of program.
In order to shed one pound of fat you will have to burn extra 3500 calories per week. Therefore in a day you will be burning 500 calories. To lose 40 to 60 pounds you will have to burn from 140,000 to 210,000 calories in a short span of 28 days. Even if you were able to burn 1000 calories per day you will be burning only 28000 calories in 28 days. Losing 8 to 10 lbs per month is a decent weight loss result. Shedding more than this range is not recommendable as it leads to health complications and the lost weight comes back. Performing exercises like running, swimming, jump rope, rowing, cycling, etc helps you burn more calories.