Slim people are not slim because they consciously estimate portion sizes and control themselves from a certain limit - this happens mostly unconsciously.
On average, each person consumes around 900,000 kilocalories a year.
Even a deviation of one percent, perhaps a handful of chips a day, leads to an increase in purely mathematical terms.
In the home office, the way to the refrigerator is short and the temptation is great.
Finding the right amount of calories each day would hopelessly overwhelm our cerebrum. Instead, a large number of unconscious control loops made up of messenger substances and hormones control our eating behavior. If the body has lost mass through a diet, these control loops signal an acute deficiency. Feelings of hunger drive you back to your original weight. The good news: the so-called setpoint is not set in stone.