Brown pinpointed foods to eat daily (like leafy greens and fruits), several times a week (like yogurt and avocado) and just once a week (like red meat), as well as foods to cut out completely (like diet soda).

Isagenix-approved snacks: Almonds, SlimCakes, fruit, fat-free Greek yogurt, Isagenix Fiber Snacks, etc. Lean proteins: Chicken, shrimp, fish, eggs, etc. Vegetables: Greens, mushrooms, zucchini, peppers, celery, tomatoes, broccoli, etc. Fruits: Apples, pears, oranges, grapes, berries, etc.

Proven weight loss. Research has found that meal replacement shakes can help with weight loss. One study tracked two groups of people as they tried to lose weight over the course of 3 months. At the end of the study, the group that did not use meal replacement shakes lost only 1.5% of their initial body weight.

Turn the temperature down Exposing your body to cool and even cold temperatures may help recruit more brown fat cells. Some research has suggested that just two hours of exposure each day to temperatures around 66˚F (19˚C) may be enough to turn recruitable fat to brown.

They can either give in to the comfort foods and live with the weight gain, or eat nothing but grapefruit and celery to maintain a healthy weight. Having that piece of cake or slice of pizza is absolutely OK as long as the majority of the diet consists of nutrient-dense foods.

Here are 9 more tips to lose weight faster:

1. Eat a high protein breakfast.
2. Avoid sugary drinks and fruit juice.
3. Drink water before meals.
4. Choose weight-loss-friendly foods.
5. Eat soluble fiber.
6. Drink coffee or tea.
7. Base your diet on whole foods.
8. Eat slowly.

People should only consume one or two protein shakes daily and for a short time only. It is also best to choose a protein shake that fulfills part of a healthful diet. For instance, a person who does not eat many vegetables might choose a meal replacement protein shake that contains vegetables.