Resting metabolic rate (RMR) can be affected by

1 . Age

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several factors including age, gender, body composition, muscle mass, activity level, and genetics.

Resting metabolic rate (RMR) is the amount of energy your body needs to perform basic functions such as breathing, circulating blood, and regulating body temperature while at rest. Several factors can affect your RMR, including:

1. Body composition: Muscle tissue is more metabolically active than fat tissue, so individuals with a higher percentage of muscle mass generally have a higher RMR.

2. Age: As you get older, your muscle mass tends to decrease, which can lower your RMR.

3. Weight: Generally, a higher bodyweight usually results in a higher RMR because more energy is required to maintain a larger body.

4. Gender: Men, on average, tend to have higher RMRs than women due to differences in muscle mass and hormone levels.

5. Hormonal factors: Thyroid hormones and other hormones can influence your RMR. Conditions that affect hormone levels, such as hypothyroidism, can lower your RMR.

6. Genetics: Some people may have a naturally higher or lower RMR due to genetic factors.

7. Physical activity: Regular exercise and physical activity increase your RMR, as they require more energy to perform. Increasing physical activity can contribute to a higher RMR.

8. Diet: Restrictive diets and low-calorie intake can cause a decrease in RMR as the body tries to conserve energy. On the other hand, overeating or regular consumption of high-calorie foods can increase RMR.

It's important to remember that while these factors may influence your RMR, they are not the only determinants of overall energy balance and metabolism. It's always best to consult with a healthcare professional or registered dietitian for personalized recommendations and guidance.

Resting metabolic rate (RMR) refers to the number of calories your body burns at rest to maintain basic physiological functions like breathing, circulation, and cell production. Several factors can affect RMR. Let me explain each of these factors:

1. Age: As you age, your metabolic rate tends to decrease. This is because as you get older, your body composition changes, and you may lose muscle mass, which is more metabolically active than fat.

2. Gender: Men generally have a higher RMR than women because they typically have more muscle mass and less body fat.

3. Body composition: Muscle tissue is more metabolically active than fat tissue, meaning it burns more calories at rest. So, individuals with higher muscle mass tend to have a higher RMR.

4. Weight: Generally, the more you weigh, the higher your RMR will be, as it takes more energy to sustain a larger body.

5. Hormonal factors: Various hormones like thyroid hormones, adrenaline, and insulin affect metabolic rate. An imbalance in these hormones can influence RMR.

6. Exercise: Regular physical activity, including both cardio and strength training exercises, can increase your RMR in the long term. This is because exercise helps build muscle mass and improves overall metabolic function.

7. Diet: Extreme calorie-restricted diets can lower your RMR in the short-term as your body tries to conserve energy. On the other hand, consuming an adequate amount of calories and nutrients can support a healthy metabolism.

It's important to note that while these factors can influence RMR, the impact of each factor varies from person to person. Calculating your RMR accurately may require professional assistance or the use of specialized equipment.