Reference

All functions
calculate_bmi()	Calculate the body mass index (BMI) based on current weight and height.
exercise_plan()	Create an exercise plan based on current weight, height, age and target BMI.
project_bmi()	Compute average BMI change per week based on current weight, height, age, and target BMI. The average BMI increase or decrease each week is computed. If return_graphis TRUE, a ggplot graph is given based on forcasted BMI trajectory for the target timeframe.
project_calories()	Calculate caloric intake per day based in a target weight. Assumption is that the goal is losing weight rather than gaining weight.