how many calories do we burn a day average?!

Your BMR (basal metabolic rate) is the amount of calories you burn in a 24 hour period at rest. Every organ in your body requires energy in the form of calories to run, with your brain being one of the most energy hungry organs.

An 18 yr old woman your size will burn about 1250 calories a day just to sustain life. Every action you take burns additional calories.

yup you do sitting on the couch you burn about 70 cal and hour. Two snickers bars is about 500cal so around 1700 a day probably less for you since your on the smaller side.

An average height/build 140lb woman who is light-moderately active will probably burn around 2000 calories per day.