WebMD states that a pound of fat is equivalent to 3,500 calories. This means that in order to lose 10 pounds in a single week, it's necessary to burn off 35,000 calories. According to WebMD, the best method for achieving fast weight loss is to create a caloric deficit within the body. This can be achieved through a combination of eating less calories and exercising more.
WebMD states that a healthy rate of weight loss is considered to be in the range of 3 to 5 pounds per week. Weight loss above this range may indicate that a person is practicing unsafe techniques, such as eating too little or exercising too much.
In order to lose weight safely, WebMD recommends exercising an hour per day and eating a diet that consists primarily of lean proteins and vegetables. Lean proteins may include meats such as fish, chicken and turkey. Vegetables are naturally low in calories and high in vitamins and minerals and are therefore ideal in large quantities at mealtime. WebMD also recommends drinking plenty of water and removing sodium and starchy foods, such as pastas, breads and potatoes, from the diet. Additionally, sugar should be avoided as much as possible.