I am trying to set up an equation to find weight loss over time where the amount of exercise and number of calories consumed is constant. I am having trouble with it. The base amount of calories that your body burns every day (BMR) is based on your current weight. BMR is the base metabolic rate and is given by: BMR = 10*weight + 6.25*height -5*age + 5 Weight loss (∆W) is given by: Initial weight - ((BMR + Exercise - Food intake)*∆days)/7700 Wi - ((BMR+E-C)×∆d)/7700 7700 is the calories in 1kg (just in case you were wondering). I am to assume that the calorie intake, the height and amount of exercise is constant. The age (in years) from BRM will be related to the days from the ∆W equation. Help is appreciated.