
The Fast Metabolism Diet is a 28-day nutrition program that claims to help people lose weight by speeding up their metabolism through macronutrient cycling. The diet, which was developed by celebrity nutritionist Haylie Pomroy, consists of three phases that are repeated on a weekly basis. Each phase has different dietary and exercise recommendations, with an emphasis on rotating foods throughout the week. While the diet promotes healthy eating and may lead to short-term weight loss, there is limited scientific evidence supporting its effectiveness, and the rapid weight loss it promises may not be sustainable or healthy.
| Characteristics | Values |
|---|---|
| Diet Plan | 28-day nutrition program |
| Creator | Haylie Pomroy |
| Weight Loss | Lose up to 20 pounds in 28 days |
| Metabolism | Eating particular foods at certain times tricks your metabolism into speeding up |
| Phases | 3 phases repeated on a weekly basis for a total of four weeks |
| Foods to Eat | Carbohydrate-rich foods, fruits with high natural sugars, whole grains, healthy fats, lean meats, and more |
| Foods to Avoid | Wheat, corn, dairy, soy, sugar, dried fruit, juices, caffeine, alcohol, fat-free diet foods, non-organic produce, and nitrate-containing meats |
| Exercise | 2-3 times per week, including cardio, yoga, meditation, and strength training |
| Additional Rules | Eat five times a day, drink adequate water, and follow the phases in order |
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What You'll Learn
- The diet's creator, Haylie Pomroy, is a celebrity nutritionist and wellness consultant
- The diet is split into three phases, which are repeated weekly for four weeks
- Each phase has different goals and specific diet and exercise recommendations
- The diet excludes wheat, corn, dairy, soy, sugar, dried fruit, juices, caffeine, alcohol and fat-free foods
- The diet claims to help you lose up to 20 pounds in 28 days

The diet's creator, Haylie Pomroy, is a celebrity nutritionist and wellness consultant
The Fast Metabolism Diet is a nutrition program designed by celebrity nutritionist and wellness consultant Haylie Pomroy. Pomroy, who holds a bachelor of science degree in animal science from Colorado State University, is also the author of a bestselling book on the diet. The diet first gained popularity in 2013 and has since been used by celebrities like Angela Bassett and Robert Downey Jr.
The Fast Metabolism Diet is a 28-day program that consists of three phases, each with its own dietary and exercise recommendations. The diet claims to speed up metabolism, helping individuals lose weight and improve their overall health. According to Pomroy, eating certain foods at specific times can trick the body into boosting its metabolic rate, resulting in increased fat burning and weight loss.
The first phase, "Unwind Stress," focuses on unwinding stress and controlling cortisol hormones, which can stimulate weight gain if they become concentrated in the blood. Dieters are advised to eat a high-glycemic, carb-rich diet with moderate amounts of protein and no fats. Vigorous cardio exercises are recommended during this phase.
The second phase, "Unlock Fat Stores," aims to unlock stored fat by recommending a high-protein, high-vegetable, low-carbohydrate, and low-fat diet. Strength training is the suggested form of exercise for this phase.
The third phase, "Unleash the Burn," reintroduces healthy fats into the diet while still encouraging the moderate consumption of carbohydrates and lean proteins. Stress-reducing activities like yoga, meditation, and massages are recommended during this phase.
While the diet promotes healthy eating and may lead to short-term weight loss, it is important to note that there are no studies proving its efficacy. Additionally, the rapid weight loss promoted by the diet may not be sustainable or entirely healthy. As with any diet, it is always advisable to consult a registered dietitian or healthcare professional to ensure it aligns with your specific nutritional needs and health goals.
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The diet is split into three phases, which are repeated weekly for four weeks
The Fast Metabolism Diet is a 28-day nutrition program that claims to help you lose weight by speeding up your metabolism. It is split into three phases, which are repeated weekly for four weeks. Each phase has a different goal and specific diet and exercise recommendations.
In the first phase, the goal is to unwind stress. The diet includes high-glycemic fruits, moderate protein, and low fat. It also includes carbohydrate-rich foods such as brown rice and quinoa, fruits with high natural sugars, and low-fat, moderate-protein foods. Breakfast consists of grains and fruit, lunch includes a grain, a protein, a vegetable, and a fruit, and dinner features a grain, a vegetable, and a protein. Exercise in this phase should include at least one day of vigorous cardio, such as running or an upbeat aerobics class.
The second phase aims to unlock stored fat. The diet is high in protein and vegetables, but low in carbohydrates and fat. It features high-nutrient cruciferous vegetables and lots of lean protein. During this phase, you should also engage in strength training or other forms of exercise.
The third phase is about unleashing the burn by reintroducing healthy fats into your diet while still consuming moderate amounts of carbohydrates and lean proteins. The idea is that the fats will kick your metabolism into high gear. The diet includes healthy fats like olive oil, coconut oil, and grapeseed oil, nuts, avocado, and olives. During this phase, the diet is more flexible, and stress-reducing activities like yoga, meditation, or a massage are recommended.
After completing the 28 days, it is important to slowly reintroduce restricted foods to prevent nutritional deficiencies and guarantee weight maintenance.
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Each phase has different goals and specific diet and exercise recommendations
The Fast Metabolism Diet is a 28-day nutrition program that is divided into three phases, each with its own specific goals, diet, and exercise recommendations. The diet was developed by celebrity nutritionist and wellness consultant Haylie Pomroy, who claims that eating particular foods at certain times can trick the body into speeding up its metabolism, resulting in weight loss.
Phase 1: Unwind Stress
The first phase of the Fast Metabolism Diet focuses on unwinding stress. Diet-wise, this phase includes high-glycemic fruits, moderate protein, and low-fat foods. Carbohydrate-rich foods such as brown rice and quinoa, fruits with high natural sugar content, and low-fat, moderate-protein foods are recommended. For breakfast, a combination of grains and fruit is suggested, while lunch includes a grain, a protein, a vegetable, and a fruit. Dinner consists of a grain, a vegetable, and a protein. This routine, according to Pomroy, teaches the body to use food as energy instead of storing it as fat. Exercise-wise, Phase 1 recommends at least one day of vigorous cardio, such as running, working out on an elliptical trainer, or an upbeat aerobics class.
Phase 2: Unlock Fat Stores
The second phase of the diet aims to unlock stored fat. The diet in this phase is high-protein, high-vegetable, low-carbohydrate, and low-fat. It includes high-nutrient cruciferous vegetables and plenty of lean protein. For exercise, strength training is recommended in Phase 2.
Phase 3: Unleash the Burn
The third phase of the Fast Metabolism Diet promises to unleash the burn by reintroducing healthy fats into the diet while still encouraging the moderate consumption of carbohydrates and lean proteins. Healthy fats such as olive oil, coconut oil, grapeseed oil, nuts, avocado, and olives are recommended. The diet becomes a little more flexible in this phase. For exercise, stress-reducing activities such as yoga, meditation, or even a massage are encouraged.
General Guidelines
In addition to the specific recommendations for each phase, the Fast Metabolism Diet also provides some general guidelines. These include eating three meals and two snacks a day, eating every 3-4 hours except when sleeping, and eating within 30 minutes of waking up. Drinking half of your body weight in ounces of water each day is also recommended. The diet also warns against certain foods that should be avoided, including wheat, corn, dairy, soy, sugar, dried fruit, juices, caffeine, alcohol, and fat-free diet foods.
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The diet excludes wheat, corn, dairy, soy, sugar, dried fruit, juices, caffeine, alcohol and fat-free foods
The Fast Metabolism Diet is a 28-day nutrition program that claims to help you lose weight by speeding up your metabolism. It was developed by celebrity nutritionist and wellness consultant Haylie Pomroy, who holds a bachelor's degree in animal science. The diet is split into three phases, each with its own dietary and exercise recommendations.
The diet restricts several food groups, including wheat, corn, dairy, soy, sugar, dried fruit, juices, caffeine, alcohol, and fat-free foods. These restrictions are in place for all 28 days of the diet. Wheat and dairy products are common in the standard American diet, so this may be challenging for some.
Wheat is restricted on the Fast Metabolism Diet, which means gluten-containing grains like whole wheat bread and pasta are off the table. However, gluten-free options like oats and natural yeast wheat are allowed. Corn is also restricted, so no corn on the cob or popcorn.
Dairy products are excluded, so milk, yoghurt, cheese, and other dairy-based foods are not allowed. This restriction includes lactose, a sugar found in milk and dairy products, although some lactose-free milk is permitted in the morning, as per the sample meal plan.
Soy is restricted, although the diet's founder does make an exception for vegetarians and vegans, who are allowed to eat three organic, non-GMO soy foods: tempeh, tofu, and edamame.
Sugar is restricted, which means cutting out sweets, cakes, and other foods containing refined sugar. Natural sugars from fruit are allowed, and even encouraged in the first phase of the diet, which features high-glycemic fruits like bananas and pineapples.
Dried fruit is excluded, so no raisins, apricots, or other dehydrated fruits. Fruit juices are also restricted, so fresh fruit is the only option to get your daily dose of vitamins.
Caffeine and alcohol are restricted, so coffee, tea, energy drinks, and alcoholic beverages are off the menu. This is likely to reduce your overall calorie intake, as these drinks can be a source of hidden calories.
Finally, fat-free diet foods are excluded. This may seem counterintuitive, as one might assume that reducing fat intake would aid weight loss. However, the diet encourages the consumption of healthy fats like olive oil, coconut oil, and avocados, particularly in the third phase, to "unleash the burn." Additionally, studies have found that green tea contains a compound that may increase the calories and fat you burn.
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The diet claims to help you lose up to 20 pounds in 28 days
The Fast Metabolism Diet is a 28-day nutrition program that claims to help you lose up to 20 pounds in 28 days. The diet was developed by celebrity nutritionist and wellness consultant Haylie Pomroy, who claims that eating particular foods at certain times tricks your metabolism into speeding up, resulting in weight loss.
The diet is split into three phases, each with a different goal and specific diet and exercise recommendations. The three phases are repeated on a weekly basis for a total of four weeks. Each phase emphasizes different foods and provides recommendations for various physical activities. Portion sizes vary by phase and depend on the amount of weight you want to lose.
The first phase, or "Unwind Stress", includes high-glycemic fruits, moderate protein, and low fat, with vigorous cardio as the recommended form of exercise. The second phase, or "Unlock Fat Stores", includes very high protein, high vegetables, low carbohydrates, and low fat, with strength training as the recommended form of exercise. The third phase, or "Unleash the Burn", includes healthy fats, moderate carbohydrates, and moderate protein, with stress-reducing activities like yoga, meditation, or a massage as the recommended form of exercise.
In addition to the three phases, the diet includes a few additional rules. These include eating five times a day, eating every 3-4 hours except when sleeping, eating within 30 minutes of waking up, drinking half of your body weight in ounces of water each day, and sticking to the foods allowed in each phase. The diet also includes a list of foods to avoid, such as wheat, corn, dairy, soy, sugar, dried fruit, juices, caffeine, alcohol, and fat-free diet foods.
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