Introduction

The metabolic rate is the rate at which your body burns energy, or in other words, the number of calories you burn each day. Understanding your metabolic rate can help you manage your weight more effectively, plan a workout routine, and maintain a healthy lifestyle.

In this article, we will provide an overview of three popular methods of calculating your metabolic rate:

1. Basal Metabolic Rate (BMR)

2. Resting Metabolic Rate (RMR)

3. Total Daily Energy Expenditure (TDEE)

1. Basal Metabolic Rate (BMR)

Basal metabolic rate refers to the number of calories that your body burns while at rest to simply maintain its basic physiological functions, such as breathing, circulation, cell production etc. There are several formulas for calculating BMR, with the most widely-known ones being the Harris-Benedict equation and Mifflin-St Jeor equation.

Harris-Benedict Equation:

For men: BMR = 88.362 + (13.397 × weight in kg) + (4.799 × height in cm) – (5.677 × age in years)

For women: BMR = 447.593 + (9.247 × weight in kg) + (3.098 × height in cm) – (4.330 × age in years)

Mifflin-St Jeor Equation:

For men: BMR = 10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5

For women: BMR = 10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161

2. Resting Metabolic Rate (RMR)

Resting metabolic rate is similar to BMR, but it takes into account the calories burned while not underactivity. RMR is slightly higher than BMR since it also considers digestion, fidgetiness, etc. To estimate your RMR, you can use the Mifflin-St Jeor equations described above with a slightly higher activity factor.

3. Total Daily Energy Expenditure (TDEE)

TDEE represents the total number of calories burned daily, combining not only BMR but also the calories burned during physical activities and digestion. To calculate TDEE, we first need to determine our activity levels using the following scale:

1. Sedentary (little to no exercise) – BMR × 1.2

2. Lightly active (light exercise/sports 1-3 days a week) – BMR × 1.375

3. Moderately active (moderate exercise/sports 3-5 days a week) – BMR × 1.55

4. Very active (hard exercise/sports 6-7 days a week) – BMR × 1.725

5. Super active (very hard exercise/sports and physical job) – BMR × 1.9

After determining your activity level, multiply it with your BMR calculated using one of the previously mentioned formulas.

TDEE = BMR × Activity Level

Conclusion

Understanding and calculating your metabolic rate is essential for personalizing your diet and exercise routine to suit your unique body needs and maintain overall well-being. By using the methods outlined above, you can make informed decisions about your daily caloric intake and weight management goals. Remember that these formulas are estimates and individual circumstances may vary, so it’s always best to consult with a healthcare professional or nutritionist for personalized guidance when necessary.