When determining daily calorie requirements, you need to determine the caloric requirements of: ?

There is a statement that an average man needs around 2500 calories a day to maintain his weight. For an average woman, that figure is around 2000 calories a day. But it must be noted that in the determining the daily calorie requirements several things must be taken into consideration. The total number of calories a person needs varies depending on a number of factors, including the person's age, sex, height, weight, and level of physical activity.
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Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.