Men who were coupled up with a female, packed their plates with pizza and left the buffet line with their bowls overflowing with salad, eating 93 percent more slices and 86 percent more greens than men who ate with just other men.

‘These findings suggest that men tend to overeat to show off – you can also see this tendency in eating competitions which almost always have mostly male participants,’ explains lead author Kevin Kniffin, PhD, of Cornell University in a recent press release.

When the diners got up to leave, the researchers stepped in to ask if they would complete a short survey indicating their level of fullness after eating, and their feelings of hurriedness and comfort while eating.