Final answer:
The total amount of calories burned by the body in a day, including active and passive activities, is known as Total Daily Energy Expenditure (TDEE).
Step-by-step explanation:
The summation of all the activities your body does to burn calories in a 24-hour period, including both active and passive processes, is referred to as the Total Daily Energy Expenditure (TDEE). This encompasses the energy burned through your Basal Metabolic Rate (BMR), which accounts for the majority of your daily energy consumption, as well as physical activities and the energy utilized in regulating body temperature. While BMR largely depends on factors such as age, gender, body weight, and muscle mass, TDEE includes these aspects plus the additional energy burned through daily physical activities.