Day Energy Balance Calculation

The daily analysis helps stay on track by evaluating information every day in order to determine whether you on target or not. When you deviate from target, calculate your deviation in calories. This allows you to take an immediate measurable action, e.g. eat less or exercise more, in order to compensate the deviation calories and avoid starving at the same time.

How much weight did I lose today?

Estimates weight loss with the following empiric formula:

Losing 1 pound of body fat requires 3500 calories of deficit

which is expressed by the following equation:

Wprojected3500=CaloriesDRI -CaloriesNet

where Wprojected is projected weight loss in pounds for 1 day,

CaloriesDRIis a estimated daily Dietary Reference Intake calories depending on person’s age, gender, weight, height and personal activity level.

CaloriesNet=ConsumedCalories-BurnCalories,

where ConsumedCalories  is the number of calories consumed with food for the day and BurnCalories is the number of calories spend on additional exercise (basic daily activities are accounted by personal activity level).

After putting CaloriesNet definition in the main formula:

Wprojected3500=CaloriesDRI-ConsumedCalories+BurnCalories

Let’s introduce IntakeReduction= CaloriesDRI-ConsumedCalories :

Wprojected3500=IntakeReduction+BurnCalories

After introducing TotalLossCalories=IntakeReduction+BurnCalories   [formula1]:

Wprojected3500=TotalLossCalories

To estimate weight loss for the day are needed the following data: personal age, gender, body weight, height, activity level, accurate ConsumedCalories for the day and BurnCalories if you exercised on that day.

Am I on target?

Estimating weight loss for the day allows to predict whether you can achieve target body weight on target date. Both, date and weight, are important components of user target: losing less weight than planned (underachieving) by target date may be frustrating.

It is easy to calculate daily weight loss required by target:...