Add Stop Signs
To prevent yourself from overeating, divide your food into smaller portions (for instance, put some on a small side dish or two). Subconsciously, each empty plate cues you to slow down. Yale University researchers took a tube of potato chips and colored each seventh or fourteenth one red. Snackers who encountered these "stop signs" ate less than half as many chips as those without prompts. They were also more accurate at estimating how much they ate.