Total daily energy expenditure is the amount of calories or food that your body needs to be able to function properly. The degree to which you are physically active can impact how much energy your body needs each day, which can range from around 2,000-4,000 calories per day. However, there are many factors that can come into play when calculating this number, such as your genetics and metabolism.
In other words, total daily energy expenditure is the sum of all energy expended by an individual during a given period of time. It can be calculated by figuring out the various activities that an individual performs each day, then adding up the kilocalories that are burned during those activities. For example, this would include walking to work, running errands on the weekend, and cooking dinner for one's family.