Like Math?
This is how you figure out caloric requirements
Men: BMR = 66 + ( 6.23 x weight in pounds ) + ( 12.7 x height in inches ) - ( 6.8 x age in year )
Women: BMR = 655 + ( 4.35 x weight in pounds ) + ( 4.7 x height in inches ) - ( 4.7 x age in years )
If you are sedentary (little or no exercise) : Calorie-Calculation = BMR x 1.2
If you are lightly active (light exercise/sports 1-3 days/week) : Calorie-Calculation = BMR x 1.375
If you are moderately active (moderate exercise/sports 3-5 days/week) : Calorie-Calculation = BMR x 1.55
If you are very active (hard exercise/sports 6-7 days a week) : Calorie-Calculation = BMR x 1.725
If you are extra active (very hard exercise/sports & physical job or 2x training) : Calorie-Calculation = BMR x 1.9
Example:
66 + ( 6.23 x 200lbs ) + ( 12.7 x 73in ) - ( 6.8 x 50yo ) = 1930 (BMR, Basal Metabolic Rage)
1930 (BMR) x 1.2 (*activity multiplier) = 2316 (calories required to maintain weight)
2316 (calories required to maintain weight) – 20% (**arbitrary % of calories to create a calorie deficit) = 1853 (daily calorie intake to lose weight)
Now, the key is to adopt an easy method for accurately monitoring your daily caloric intake.
Given the above, this person could eat 12 Twinkies a day and still lose weight.
I wonder if Twinkies freeze.
*In this example I have essentially taken exercise out of the equation as most folks will overestimate the amount of exercise they get.
** The caloric deficit you create is up to you.