The energy stored in the body becomes short, the brain turns on the switch for energy saving mode to enable the body to live with small energy so that the body doesn’t need to burn fat very much.
The energy saving mode is switched on when more than 5 % of weight decreases within a month.
What happens when the energy saving mode is switched on?
Small energy is enough for the body so it is not necessary to use surplus fat as energy, resulting in not losing weight.
Once the energy saving mode is switched on, it doesn’t go back to normal state for about 1 month.
So even if the amount you eat go back to the original, you gain weight.
This is rebound weight-gain.
How can we prevent the energy saving mode?
When we feel sense of fullness, we don’t turn on the switch of the energy saving mode.
So how to prevent the energy saving mode is chewing a gum 15 minutes before a meal.
When we chew something, histamine is secreted in 15 to 20 minutes and it stimulates a part of the brain related to sense of fullness.
Another way to get sense of fullness is using small plates and cups. Even if the food has the same amount, the food looks larger on a smaller plate. It is called Delboeuf illusion.