Certain factors can influence an individual's basal metabolic rate (BMR), including age, sex, body composition, and genetic factors. For example, individuals with more muscle mass tend to have a higher BMR, as muscle tissue burns more calories at rest than fat. Additionally, hormonal imbalances, such as those involving thyroid hormones, can significantly impact BMR. Other influencing factors include diet, activity level, and overall health status. Understanding these components can help individuals tailor their nutrition and exercise plans to optimize metabolic efficiency.