To lose weight, you need to make sure that you consume about 500 calories more than you take in each day. Daily calories consumed by an adult

=

1.1

x

(Basal metabolic rate of the human body

+energy expended through exercise).

The exact algorithm for the human basal metabolic rate in kilocalories is:

Women: 18-

30

years

14.6

x

Weight (kilograms)

+

450

Men: 18-

30

years

15.2

x

Weight (kilograms)+

680

And teenagers use up a little more energy because they're growing. So you can figure out how much energy you burn each day based on the formula, however subtract 500 calories and that's how many calories you should consume each day.