How many calories the body needs in a day

The approximate body needs of calories can be identified by calculating the basic metabolic rate of both women and men and multiplying the rate by the factor of activity which depends on the level of activity practiced by the human. What is taken on this method is that it depends mainly on age and lifestyle and neglects the rest of the factors including The ratio between fat and muscle in the body, and undoubtedly, the person who has more muscles needs more calories even if not engaged in any activity, and can calculate the basic metabolic rate of the body (BMR) B Use an equation known as parity Gy, which is as follows:

  • Basic metabolic rate for men: 10 x Weight (kg) + 6.25 x Length (cm) – 5 x Age (years) + 5.
  • Basic metabolic rate for women: 10 x Weight (kg) + 6.25 x Length (cm) – 5 x Age (years) – 161.

Thus, the number of calories a person needs depends on his sex and the level of activity he is practicing as follows:

  • A person who adopts an inactive lifestyle, ie, does not exercise physically or has very little physical activity, needs a BMRx1.2.
  • A person who adopts a low-activity lifestyle, that is, practicing light exercise once or three times a week, needs calories equal to BMRx1.375.
  • A person who adopts a moderate lifestyle, that is to say, exercise moderately three to five times a week needs calories equal to BMR × 1.55.
  • A person who has a very active lifestyle, that is, he exercises twice a day, with additional exercise, which needs calories equal to BMR × 1.9.
  • A person who has a very active lifestyle, that is, he exercises twice a day, with additional exercise, which needs calories equal to BMR × 1.9.