The end-of-year celebrations bring their share of gifts and sometimes extra kilos: the fault of the gargantuan meals and the glasses of champagne . But do not panic, the light weight of the end of the year is not seen (except possibly by you).

The results of this study, conducted by psychology experts at the University of Toronto, and published in the Medical Daily, should reassure you (hopefully): "you'd have to lose (or earn) between 3.5 and 4 pounds for another person to notice, "at least in the face. This figure applies to "men and women of average height," says Nicholas Rule, director of cognition and social perception research at the University of Toronto.

To arrive at these conclusions, the researchers studied the faces of men and women aged 20 to 40, who had no particular distinction (no piercing, no hairstyle or particular hair) and who had their hair pulled back . After digitally manipulating model photographs, to obtain a full body weight and BMI (Body Mass Index) panel, Canadian researchers asked participants to randomly draw two shots from the stack and designate their face seemed the heaviest as well as the most attractive.

Scientists have therefore concluded that "it is necessary to offload double kilos to appear" more attractive "in the eyes of these same people. Very precisely 6.3 kilos for women and a little over 8 kilos for men "(always of average size).

If this study seems a little wobbly, it is still timely to enjoy the holidays without really thinking about the weight that can accumulate.