daily average in/daily average out, >1= you gain weight, <1= you loose weight.
to sum it up; if you eat too much you get fat, if you eat too little you'll loose weight.
hmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mm
mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mm
they probably knew about this in the stone age...