Our car has a digital reading that indicates the average miles-per-gallon with each tank of gas. If we drive mostly highway miles, the mpg is higher; city driving brings the average mpg down. Our speed, acceleration, stops, and other factors also affect the mileage.
I wonder what if our bodies had a digital readout to indicate how our choices affect our physical mileage?
After exercising, the "healthometer" might indicate an increase in quality of life. Drinking a spinach smoothie might increase it too, whereas eating a candy bar might show a decrease. Each body is different, therefore the indicator would be for our own personal DNA, similar to a car's gas mileage varies according to year, make, and model.
Yep, I want a healthometer. Where can I find such a thing?