So, let's say you're a 42-year-old male who is about 5'8" (173 cm) and weighs 200 lbs (91 kg).
Here's what his BMR would be:(88.4 13.4 x 91) (4.8 x 173) - (5.68 x 42) = 1900 calories burned each day just to keep the body alive.
This allows you to calculate your BMR and your energy needs.
This value depends, among other factors, on the age, from sex and from everyday activities.
As before the body mass index you need not to bother here with complicated formulas, but just use our calorie calculator.
Here you can calculate your total energy expenditure and their basal metabolic rate approximately.
The basal metabolic rate is the amount of energy your body needs per day at complete rest and fasting in order to maintain all of its features.
However, this is not so since energy is also used when your body is at rest.
The number of calories consumed by the body when at rest is referred to as Basal Metabolic Rate (BMR).
I want to point out that, In the fitness world, there are two different measurements here.
One is called your Resting Metabolic Rate and the other is what I'm talking about now, your Basal Metabolic Rate.
The main objective is therefore lose weight to achieve a negative energy balance.
Therefore you have to know what amount of calories consumed each day.
If you already know your BMR than this BMR calculator will come in very handy for you. The principle around which everything revolves in weight loss, is the so-called energy balance. This refers to the physician as a "positive energy balance".