About percent of the calories you take in are used for physiological functions like breathing, blood circulation, and digestion.

The part of the calories you take in that are used for physiological functions such as blood circulation, digestion, and breathing is about 70%. The majority of the calorie intake is used for metabolism which involves a series and combination of physiological operations and processes.

By placing 2 fingers at the sternum (the spot where the lower ribs meet) the put the heel of your other hand next to your fingers. hope this