CALORIES
what is it?
a way of keeping track of the body's energy budget
we measure in food
the amount of energy
a measure of how much energy the item stores in its chemical bonds
how are they used?
digestion
physical activity
to support basic functions of our organs and tissues
how many are they required each day?
2000 for women
2500 for men
more for pregnant women
factors of necessary amount of calories in each day?
average weight
physical activity
muscle mass
more for person doing guzzling activity
less for elderly people
food type
body's ability to process energy