Body Mass Index (BMI) gives an approximate indication - whether your weight is normal or is it over or below normal. It uses your height

Basal Metabolic Rate (BMR) is the minimum calorific requirement needed to sustain life in a resting individual. When multiplied with Activity Multiplier, you get the full calorie need per day. Calories taken above this level would increase weight and below this level would decrease weight

Waist-Hip Ratio (WHR) is the ratio of the circumference of the waist to that of the hips. It measures the proportion by which fat is distributed

Target heart rate (THR) is a desired range of heart rate reached during aerobic exercise which enables one's heart and lungs to receive the most benefit from the exercise