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Weight Loss and Metabolism

How to Speed Up Your Metabolism to Lose Weight

Weight loss is a journey that many embark on, but often with mixed results. One key element that is frequently overlooked is the role of metabolism in this process.

Metabolism refers to the biological processes that convert food into energy and is a cornerstone of weight management. An efficient metabolism aids in burning calories and fat more efficiently, making weight loss easier and more sustainable.

However, each individual's metabolic needs are different, necessitating a personalized approach to weight loss. Setting realistic and attainable goals based on one's unique metabolic rate and lifestyle is crucial. This, coupled with healthy weight loss habits, can lead to long-term success.

Understanding and optimizing your metabolism involves more than just 'eating less and moving more.' It requires a nuanced approach that includes a balanced diet, regular physical activity, adequate sleep, and stress management.

In this article, we'll explore how you can boost your metabolism to not only lose weight but also improve your overall metabolic health.

how to lose weight with a slow metabolism

The Connection of Metabolism and Weight Loss

Metabolism is often likened to an engine that burns fuel. The rate at which this engine operates varies from person to person and can significantly impact one's ability to lose weight. A higher metabolic rate means that your body burns energy faster, even at rest, aiding in weight loss and preventing weight gain (1).

Metabolic flexibility is another critical aspect. It refers to the body's ability to switch between using carbohydrates and fats as its primary energy source (2). High metabolic flexibility means your body can efficiently burn fats when carbohydrate intake is low, which is especially beneficial for weight loss.

However, various factors can influence your metabolic rate and flexibility, including age, gender, genetics, hormonal balance, and lifestyle choices like diet and exercise. Understanding these factors can help you tailor your weight loss strategy to your body's unique needs.

Identifying Metabolic Health Issues

Recognizing the signs of poor metabolic health is essential for effective weight management. Symptoms of a sluggish metabolism may include difficulty losing weight despite diet and exercise, feeling tired and sluggish, and experiencing cravings, particularly for sugary or starchy foods.

Several factors can lead to poor metabolic health. These include:

  • Sedentary Lifestyle: Lack of physical activity can slow down the metabolism, making it harder to burn calories and lose weight.

  • Poor Diet: Diets high in processed foods and sugars can disrupt metabolic balance, leading to weight gain and reduced metabolic flexibility.

  • Chronic Stress: Long-term stress can lead to hormonal imbalances that slow down the metabolism.

  • Insufficient Sleep: Quality sleep is crucial for metabolic health. Lack of sleep can disrupt the hormones that regulate appetite and metabolism.

  • Age and Genetics: Metabolic rate naturally slows down with age. Genetic factors can also play a role in one's metabolic health.

Understanding these causes is the first step toward addressing them. Simple changes in lifestyle, such as incorporating more physical activity, improving dietary habits, managing stress, and ensuring adequate sleep, can have a significant impact on improving your metabolism and facilitating weight loss.

how to increase metabolism to reduce weight

Nutrition Strategies for Metabolic Health

Following a Personalized Macro Diet

Adopting a macro diet involves focusing on the three macronutrients: carbohydrates, proteins, and fats. This approach helps balance your diet, which is crucial for boosting metabolism.

macro diet doesn't just count calories; it emphasizes the quality and balance of nutrients. Proteins are essential for muscle repair and growth, fats are vital for hormone production and energy, and carbohydrates are the primary fuel source for your body and brain.

"I lost 8 lbs in my first two weeks of having my lumen. I’m pre-diabetic/insulin-resistant with a metabolic disorder. I never imagined I would get these results. It motivates me so much. I can’t imagine not having it." Thank you!
Tricia, Lumen User

With every metabolic measurement, Lumen provides real-time feedback on what fuel your body is burning - carbs or fats. This information can help you adjust your macro intake to optimize metabolism and understand how your body reacts to different foods and activities.

Without these insights, you’re left guessing what is right for your body and when.

Tips for our Lumen Metabolic Coaches:

  • Aim for a mix of carbohydrates (like whole grains and vegetables), lean proteins (such as chicken, fish, or plant-based alternatives), and healthy fats (like avocados and nuts).

  • Pay attention to portion sizes and make sure you’re eating the right amount of food at each meal

  • Use a nutritional plan personalized to your physiology to guide your day with the right amount of macros

metabolism weight loss

Mastering Meal Timing

The timing of your meals can also impact your metabolic rate. Eating regular meals and snacks keeps your metabolism active throughout the day. Skipping meals, especially breakfast, may slow your metabolism as your body conserves energy (3).

You can use breath measurements to help you understand how the timing of your meals affects your metabolism and find the times that naturally sync with your body's natural metabolic rhythms.

"At 62, this has supported my weight loss & health improvement journey. It’s amazing that I’ve lost 17 pounds in 3 months. There's still 12 to go - but I’m confident I will get it off and keep it off as Lumen confirms my improved metabolic flexibility."
Debb, Lumen User

If you’re fasting, Lumen can suggest the best times to eat based on your metabolic data. By measuring throughout your fast, you can pinpoint the hour your body begins to enter stress mode and switch from burning fats to burning carbs. This helps enhance your metabolic flexibility.

Our Lumen metabolic coaches recommend the following:

  • Start your day with a nutritious breakfast. This sets the tone for the day, while smaller, lighter dinners will help you avoid the post-dinner slump

  • Don’t go too long without eating - skipping meals can cause your blood sugar levels to drop, which can lead to overeating later on

Lifestyle Changes for Metabolic Health

Exercise and Metabolism

Regular physical activity is one of the most effective ways to boost your metabolic rate. Both aerobic exercises and strength training play a vital role. Physiologically, different forms of exercise affect metabolism in distinct ways:

Aerobic exercises: exercises like running, cycling, or swimming, increase the heart rate and breathing, promoting cardiovascular health. Aerobically, the body primarily burns carbohydrates, but as the intensity decreases or duration increases, it progressively utilizes more fat as a fuel source, especially after glycogen stores start to deplete.

This helps enhance metabolic flexibility.

Lower-intensity exercises can burn a higher percentage of fat, while high-intensity workouts burn more calories overall, contributing to fat loss.

Anaerobic exercise (strength training) is a form of exercise, including weightlifting or high-intensity interval training (HIIT), that primarily uses carbohydrates as a fuel source. It also increases muscle mass, which is metabolically active tissue.

More muscle mass means a higher resting metabolic rate (RMR), as muscles require more energy to maintain than fat.

During these activities, muscle fibers undergo stress and microscopic damage, triggering a repair process that eventually results in muscle growth (hypertrophy).

Adequate protein intake is essential for this process, as it provides the necessary building blocks for muscle repair and growth.

Pre-workout Nutrition

The purpose of pre- and post-workout nutrition is to optimize exercise performance and recovery.

The goal of pre-workout nutrition is to provide energy and optimize performance. This typically involves consuming carbohydrates (for readily available energy) and protein (to reduce muscle protein breakdown) 1-3 hours before exercise.

The body uses glycogen, stored in muscles and the liver, as the primary fuel source during exercise, and consuming carbohydrates pre-workout can enhance glycogen stores.

"Before you work out, it’s important to make sure you have enough available energy in the form of carbs so you can perform at your best. Carbs improve performance by providing a rapid source of energy to muscles. This allows to delay fatigue and also to perform at higher levels for longer."
Don Saladino, Celebrity Fitness Trainer

Post-exercise, the body is in a recovery and repair mode. Consuming protein post-workout is crucial as it provides the amino acids necessary for muscle repair and growth.

Carbohydrates are also important after exercise to replenish glycogen stores that have been depleted. This is particularly vital in endurance training or if the next exercise session is within 24 hours.

how to improve metabolism to lose weight

Lumen metabolic coaches recommend these exercise tips:

  • Incorporate strategic nutrition around pre and post-workout

  • Combine cardio and strength training. Both types of exercise into your routine for the best results. Studies show resistance training enhances metabolic rate and reduces body fat percentage (4).

  • Aim for at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous activity a week, plus muscle-strengthening activities on 2 or more days a week.

The Impact of Sleep

Adequate sleep is crucial for metabolic health. Lack of sleep can lead to hormonal imbalances that increase hunger and cravings, making weight management more challenging (5).

Additionally, carbs are more efficiently metabolized during daylight hours, so consuming them close to bedtime can lead to digestive issues and difficulty falling asleep.

It is recommended to avoid heavy, high-fat meals before bed, as their longer digestion time can cause discomfort and can block morning fat burn. For better sleep quality, opt for a light snack or a small meal earlier in the evening, aligning with the body's natural digestive rhythms.

This approach is grounded in nutritional science and aims to enhance overall sleep health. Lumen users who sleep approximately 7-9 hours per night are 35% more likely to reach a fat-burn state in the morning compared to users who sleep approximately 4-6 hours per night.

Sleep strategies shared by our Lumen metabolic coaches:

  • It's best to stop eating 3 hours before bed. It helps the body shift to morning fat burn
  • Measure your metabolic status before going to bed and when you wake up. Your morning breath is the most important indicator of your day
  • Establish a routine in your sleep schedule. Go to bed and wake up at the same time every day, even on weekends.
  • Create a sleep-friendly space. Make sure your bedroom is dark, quiet, and cool.

Managing Stress

Chronic stress triggers a complex hormonal response in the body, central to which is the release of cortisol, often referred to as the "stress hormone." Produced by the adrenal glands, cortisol plays a crucial role in the body's stress response.

Stress can trigger the release of biochemical hormones and peptides like leptin, ghrelin, and neuropeptide Y. Additionally, being obese can be stressful due to widespread weight stigma (7). 

However, when stress becomes chronic, the prolonged elevation of cortisol can have several adverse effects on metabolism and weight.

Cortisol can also affect where the body stores fat. Research indicates that high cortisol levels are associated with fat deposition in the abdominal area. Abdominal fat, unlike fat in other areas, is particularly active hormonally and is closely linked to the development of cardiovascular disease and type 2 diabetes.

Techniques that can help manage and reduce stress:

  • Practicing mindfulness and meditation practices can help reduce stress and improve your overall sense of well-being.
  • Exercise is a great stress reliever. Even a short walk can have a calming effect.
  • Reducing uncertainty about dietary and exercise choices can lower stress levels, indirectly benefiting your metabolism.

People also asked

We’ve gathered some of the most common questions about metabolism and weight loss, and our metabolic coaches are answering them for us:

Q1: How can I speed up my metabolism to lose weight?

A: To speed up your metabolism, focus on building muscle through strength training, as muscle tissue burns more calories than fat. Also, ensure you're eating enough protein, which has a higher thermic effect and can boost metabolism during digestion. Staying hydrated and getting enough sleep are also crucial for maintaining a healthy metabolic rate.

Q2: Can certain foods increase my metabolic rate?

A: While no food can dramatically change your metabolism, some can provide a small boost. For instance, spicy foods, green tea, and coffee have been shown to increase metabolic rates temporarily.

However, the most significant impact comes from a balanced diet rich in whole foods. Foods high in protein, for instance, require more energy to digest, thus increasing the metabolic rate.

Similarly, foods rich in fiber, like fruits and vegetables, provide satiety and help maintain a healthy metabolic rate.

Q3: Does metabolism significantly slow down with age?

A: Metabolism does slow down with age, primarily due to the loss of muscle mass. However, this decline isn't as dramatic as often believed. You can counteract this effect by staying active and incorporating strength training into your routine.

Q4: Is a slow metabolism the reason I can't lose weight?

A: While a slow metabolism might contribute to weight challenges, it's rarely the sole cause. Factors like diet, exercise habits, sleep, and stress levels play more significant roles in weight management.


Enhancing your metabolism for weight loss is about more than just diet and exercise; it's a holistic approach that includes understanding and nurturing your body's needs.

By focusing on a balanced diet rich in macronutrients, maintaining regular physical activity, ensuring quality sleep, and managing stress, you can significantly improve your metabolic health. Remember, the key to sustainable weight loss is not in drastic diets or rigorous exercise regimes but in a consistent, balanced lifestyle.

Tailor these strategies to fit your personal needs and preferences, and be patient with yourself. Improving metabolic health is a journey, not a race. With the right approach, you can achieve not only your weight loss goals but also a healthier, more energetic life.


  1. Judge A, Dodd MS. Metabolism. Essays Biochem. 2020 Oct 8;64(4):607-647. doi: 10.1042/EBC20190041. PMID: 32830223; PMCID: PMC7545035.
  2.  Smith RL, Soeters MR, Wüst RCI, Houtkooper RH. Metabolic Flexibility as an Adaptation to Energy Resources and Requirements in Health and Disease. Endocr Rev. 2018 Aug 1;39(4):489-517. doi: 10.1210/er.2017-00211. PMID: 29697773; PMCID: PMC6093334.
  3. Bishehsari F, Engen PA, Adnan D, Sarrafi S, Wilber S, Shaikh M, Green SJ, Naqib A, Giron LB, Abdel-Mohsen M, Keshavarzian A. Abnormal food timing and predisposition to weight gain: Role of barrier dysfunction and microbiota. Transl Res. 2021 May;231:113-123. doi: 10.1016/j.trsl.2020.11.007. Epub 2020 Nov 20. PMID: 33221482; PMCID: PMC8016699.
  4.  Westcott WL. Resistance training is medicine: effects of strength training on health. Curr Sports Med Rep. 2012 Jul-Aug;11(4):209-16. doi: 10.1249/JSR.0b013e31825dabb8. PMID: 22777332.
  5.  Mesarwi O, Polak J, Jun J, Polotsky VY. Sleep disorders and the development of insulin resistance and obesity. Endocrinol Metab Clin North Am. 2013 Sep;42(3):617-34. doi: 10.1016/j.ecl.2013.05.001. PMID: 24011890; PMCID: PMC3767932.
  6.  Tomiyama AJ. Stress and Obesity. Annu Rev Psychol. 2019 Jan 4;70:703-718. doi: 10.1146/annurev-psych-010418-102936. Epub 2018 Jun 21. PMID: 29927688.

Lumen Editorial Desk & Reviewed by: Danielle Cadosh, Nutritionist at Lumen