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  • CALIBRE PROTOCOLS

    Science-Backed Metabolic Testing for Performance, Metabolism, and Longevity

    Calibre has collaborated with global experts to create validated, easy-to-follow protocols that deliver the most meaningful results. Always follow them exactly—our patented design may differ from what you're used to, and every step matters.

    Whether you're new or experienced, these protocols help you get the most out of Calibre based on your goals.

    Though procedures may be similar, the insights are personal. We've grouped them by Performance, Longevity, and Metabolism to guide your experience.

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    Footnote on Session duration and limitations*

    How to Use Calibre Protocols

    To ensure consistent and reliable measurements:

    1. Follow the protocol guidelines in the PDFs below.
    2. Use a controlled environment when testing to minimize external influences.
    3. Interpret results in context with your training, nutrition, or metabolic goals.

    Each protocol document provides:

     Step-by-step instructions for performing the test
     Pre-test considerations (e.g., fasting, hydration, activity level)
     Expected outcomes and data interpretation
     Troubleshooting tips to improve accuracy

    VO2 Max Protocol

    VO2Max, maximal oxygen consumption, is a measure of aerobic fitness and endurance and reflects the efficiency with which the body can transport and utilize oxygen in the muscles during sustained physical activity.

    A high VO2Max allows athletes to perform at harder intensities for longer periods without fatiguing - a key factor in sports that require endurance, such as running, cycling, and swimming.

    By training to improve VO2Max, athletes can enhance overall performance, delay the onset of fatigue, and achieve better results in both aerobic and anaerobic activities.

    Knowing your VO2Max can be a valuable indicator of overall health and longevity as it's closely linked to cardiovascular and respiratory fitness, which are essential for long-term health.

    Studies have shown that higher VO2Max levels are associated with a lower risk of chronic diseases such as heart disease, diabetes, and stroke.

    By understanding your VO2Max, you can gauge your aerobic fitness level and take proactive steps to improve it. Enhancing it can lead to better energy management, improved metabolic function, and a greater capacity to handle physical stress, all of which contribute to a longer, healthier life.

    VO2Max reflects your maximum capacity to utilize oxygen, directly linked to your metabolic rate and energy production pathways.

    A higher VO2Max indicates a more efficient metabolic system, enhancing energy production, especially through aerobic processes.

    This allows you to tailor your training  and nutrition strategies to optimize metabolic health. By monitoring changes in your VO2Max over time, you can assess the impact of different training or dietary adjustments based on your individualized metabolism, enabling more personalized and effective fitness planning.

    Download protocol
    VO2 Max Protocol.jpg__PID:e8278610-03f9-46f7-bdfc-4c02aea38577

    VO2 Max Protocol

    VO2 Max Protocol.jpg__PID:e8278610-03f9-46f7-bdfc-4c02aea38577
    For Performance

    VO2Max, maximal oxygen consumption, is a measure of aerobic fitness and endurance and reflects the efficiency with which the body can transport and utilize oxygen in the muscles during sustained physical activity.

    A high VO2Max allows athletes to perform at harder intensities for longer periods without fatiguing - a key factor in sports that require endurance, such as running, cycling, and swimming.

    By training to improve VO2Max, athletes can enhance overall performance, delay the onset of fatigue, and achieve better results in both aerobic and anaerobic activities.

    For Longevity

    Knowing your VO2Max can be a valuable indicator of overall health and longevity as it's closely linked to cardiovascular and respiratory fitness, which are essential for long-term health.

    Studies have shown that higher VO2Max levels are associated with a lower risk of chronic diseases such as heart disease, diabetes, and stroke.

    By understanding your VO2Max, you can gauge your aerobic fitness level and take proactive steps to improve it. Enhancing it can lead to better energy management, improved metabolic function, and a greater capacity to handle physical stress, all of which contribute to a longer, healthier life.

    For Metabolism

    VO2Max reflects your maximum capacity to utilize oxygen, directly linked to your metabolic rate and energy production pathways.

    A higher VO2Max indicates a more efficient metabolic system, enhancing energy production, especially through aerobic processes.

    This allows you to tailor your training  and nutrition strategies to optimize metabolic health. By monitoring changes in your VO2Max over time, you can assess the impact of different training or dietary adjustments based on your individualized metabolism, enabling more personalized and effective fitness planning.

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    Resting Metabolic Rate Protocol

    Knowing your Resting Metabolic Rate (RMR) is key for athletes, as it reflects the energy your body uses at rest for vital functions.

    It helps estimate your total daily energy expenditure (TDEE), which is essential for building an effective nutrition plan.

    Aligning calorie intake with actual energy needs supports performance, recovery, and body composition. Whether you're training hard, building muscle, or managing fat, RMR gives you the data to fuel properly and perform at your best - while supporting long-term health.

    Understanding your RMR is a powerful way to support long-term health.

    It helps you manage energy intake, maintain a healthy weight, and prevent age-related metabolic decline.

    A balanced diet guided by RMR data can reduce the risk of chronic diseases like heart disease and diabetes. By aligning your lifestyle with your RMR—through smart nutrition and regular activity—you can maintain muscle mass, reduce inflammation, and enhance your chances of aging well.

    Your RMR reveals how much energy your body needs at rest, making it a key metric for managing metabolism.

    It helps tailor your diet and exercise to support metabolic health and weight management.

    For example, building muscle can increase RMR and improve calorie-burning efficiency. Using your RMR as a guide allows for smarter adjustments to fuel your body, enhance energy levels, and improve overall metabolic balance and well-being.

    Download protocol

    Resting Metabolic Rate Protocol

    RMR Protocol.jpg__PID:0e3f4a2a-f89d-4742-a586-ac75d6950b87
    For Performance

    Knowing your Resting Metabolic Rate (RMR) is key for athletes, as it reflects the energy your body uses at rest for vital functions.

    It helps estimate your total daily energy expenditure (TDEE), which is essential for building an effective nutrition plan.

    Aligning calorie intake with actual energy needs supports performance, recovery, and body composition. Whether you're training hard, building muscle, or managing fat, RMR gives you the data to fuel properly and perform at your best - while supporting long-term health.

    For Longevity

    Understanding your RMR is a powerful way to support long-term health.

    It helps you manage energy intake, maintain a healthy weight, and prevent age-related metabolic decline.

    A balanced diet guided by RMR data can reduce the risk of chronic diseases like heart disease and diabetes. By aligning your lifestyle with your RMR—through smart nutrition and regular activity—you can maintain muscle mass, reduce inflammation, and enhance your chances of aging well.

    For Metabolism

    Your RMR reveals how much energy your body needs at rest, making it a key metric for managing metabolism.

    It helps tailor your diet and exercise to support metabolic health and weight management.

    For example, building muscle can increase RMR and improve calorie-burning efficiency. Using your RMR as a guide allows for smarter adjustments to fuel your body, enhance energy levels, and improve overall metabolic balance and well-being.

    FatMax Protocol

    Knowing your FatMax—the intensity where your body burns the most fat—can be a game changer for athletes.

    Training near this zone boosts fat oxidation, conserves glycogen, and delays fatigue—especially in endurance sports.

    It also improves metabolic flexibility, allowing your body to shift more efficiently between fat and carbs. With this insight, you can tailor workouts to improve endurance, body composition, and energy efficiency for peak performance.

    Understanding your FatMax can support a longer, healthier life by improving fat-burning efficiency through low-to-moderate intensity exercise.

    Training at this level preserves muscle, enhances insulin sensitivity, and reduces inflammation—key factors in aging well.

    Integrating FatMax sessions into your routine supports heart health, metabolic balance, and long-term disease prevention, all while promoting a higher quality of life.

    FatMax helps you fine-tune your metabolism by targeting the zone where fat burning is most efficient.

    Training here improves your body’s ability to switch between fuel sources, supporting better energy balance and weight control.

    It also enhances insulin sensitivity and reduces metabolic risk. Consistent FatMax sessions can elevate your fat-burning capacity and drive healthier, more efficient metabolic function.

    Download protocol
    FatOx Protocol.jpg__PID:8254b26b-f1a2-4517-aa3a-2f1b887fa00c

    FatMax Protocol

    FatOx Protocol.jpg__PID:8254b26b-f1a2-4517-aa3a-2f1b887fa00c
    For Performance

    Knowing your FatMax—the intensity where your body burns the most fat—can be a game changer for athletes.

    Training near this zone boosts fat oxidation, conserves glycogen, and delays fatigue—especially in endurance sports.

    It also improves metabolic flexibility, allowing your body to shift more efficiently between fat and carbs. With this insight, you can tailor workouts to improve endurance, body composition, and energy efficiency for peak performance.

    For Longevity

    Understanding your FatMax can support a longer, healthier life by improving fat-burning efficiency through low-to-moderate intensity exercise.

    Training at this level preserves muscle, enhances insulin sensitivity, and reduces inflammation—key factors in aging well.

    Integrating FatMax sessions into your routine supports heart health, metabolic balance, and long-term disease prevention, all while promoting a higher quality of life.

    For Metabolism

    FatMax helps you fine-tune your metabolism by targeting the zone where fat burning is most efficient.

    Training here improves your body’s ability to switch between fuel sources, supporting better energy balance and weight control.

    It also enhances insulin sensitivity and reduces metabolic risk. Consistent FatMax sessions can elevate your fat-burning capacity and drive healthier, more efficient metabolic function.