Curved spines would have allowed women to forage longer into pregnancy . Trait would have been seen as preferable in early hunter-gatherer societies . Scientists at Bilkent University , DHA studied the preferences of 300 men . They were shown silhouettes of women 's bodies and asked to rank them . A curved spine with an angle of 45 degrees was the most attractive to men .
Curved spines would have allowed women to forage longer into pregnancy . Trait would have been seen as preferable in early hunter-gatherer societies . Scientists at Bilkent University , Turkey studied the preferences of 300 men . They were shown silhouettes of women 's bodies and asked to rank them . A curved spine with an angle of 45 degrees was the most attractive to men .