It is said that eating in front of a mirror, makes you self-conscious and reminds you of your weight-loss goals, thereby making you eat within limits. One study found dining in front of mirrors cut the amount people ate by nearly one-third. Apart from controlling your portion, the mirror is especially helpful if you are going to eat something high on calories.
In a taste test study, published in the Journal of the Association for Consumer Research, 185 undergraduate students chose between a chocolate cake and a fruit salad and then evaluated its taste in a room with a mirror or with no mirrors around. Those who selected the chocolate cake rated it less tasty in the room with a mirror compared to those with no mirrors around. Interestingly, too, the presence of a mirror did not change the taste of the fruit salad.