Men 

Shirt.

Researchers at Nottingham Trent University have made ​​a startling discovery: what is printed on the t-shirt could have a big effect on your attractiveness to the opposite sex.

The study involved Plain White T-shirt with the letter "T" printed on them - a shirt had a right-side-up T, and one was upside down, with the cross of the letter that extends throughout the belly. The hypothesis was that heterosexual women would find men more attractive if it was an illusion perpetrated, which emphasizes a "V-shaped torso," an alleged sign of masculinity. The letter T, through the chest, which may or exaggerated form or deny it, depending on the way in which it is shot.

And the orientation of the project, in fact, have a remarkable effect! The right side up t may increase the attractiveness of a man as much as 12 percent, the researchers found. The effect was much more pronounced in men who were less fit to begin with, the theory is that those people simply have less to gain from an optical illusion. But good news for those of us with bodies that look more like old sacks of ripe avocado that a conventionally attractive male torso!