Health

Put your condition into numbers — BMI, metabolism, heart-rate zones, hydration and sleep.

Body metrics such as BMI, body fat percentage, body surface area and ideal weight; exercise metrics including target heart-rate zones and VO2 max; and day-to-day condition tracking like water intake, sweat rate and caffeine half-life. The formulas used are the widely published standard ones — BMI as weight divided by height squared, the Du Bois formula for body surface area, and so on. These are general-purpose indicators, not medical diagnoses, and nothing here should be used to decide on treatment. If something about your health concerns you, please speak to a medical professional.