Question

Resting metabolic rate (RMR) can be affected by
(1 point)

Answer 1

Resting metabolic rate (RMR) can be affected by several factors, including:

1. **Age**: RMR typically decreases with age due to a loss of muscle mass and changes in hormone levels.
2. **Sex**: Men usually have a higher RMR compared to women, mainly due to greater muscle mass.
3. **Body composition**: Higher levels of lean muscle mass increase RMR, while a higher percentage of body fat can lower it.
4. **Hormonal levels**: Hormones such as thyroid hormones can significantly influence RMR; for instance, hyperthyroidism can increase RMR.
5. **Genetics**: Genetic factors can determine individual variations in metabolic rates.
6. ** caloric intake**: Extreme caloric restriction can lower RMR as the body adapts to conserve energy.
7. **Environmental factors**: Temperature can influence RMR, with colder environments potentially increasing it as the body works to maintain its core temperature.
8. **Physical fitness**: Regular physical activity, especially strength training, can increase muscle mass and thus raise RMR.

Each of these factors can play a significant role in determining an individual's resting metabolic rate.