Basal Metabolic Rate (BMR) refers to the amount of energy or calories that an individual's body needs to maintain its basic functions at rest. These basic functions include activities like breathing, circulating blood, adjusting hormone levels, and regulating body temperature. BMR is determined by several factors including age, gender, weight, height, and body composition.
BMR is expressed as the number of calories burned per day while the body is at complete rest and in a fasting state, typically measured in kilocalories per kilogram of body weight per hour. It essentially represents the minimum energy requirement needed for survival without any physical activity.
Basal metabolic rates vary from person to person due to factors like genetics, muscle mass, hormonal influences, and overall health. Generally, BMR decreases with age and tends to be lower in women compared to men due to differences in body composition and hormonal factors.
BMR is an important factor to consider when determining calorie intake and managing weight. In order to maintain weight, an individual's calorie consumption should, on average, match their BMR. If the calorie intake exceeds the BMR, weight gain may occur, while a calorie deficit relative to BMR would result in weight loss. Physical activity, including exercise and daily tasks, should also be taken into account to accurately estimate an individual's total energy expenditure for optimal health and weight management.
