Bruises are an inevitable part of life. Once we fall or bump against a table or a door, they remind us that we are mortal, and the material world can hurt. Painful and unsightly, bruises are considered as signs of bad luck and violence. As well as courage. This is why boys often boast of having got a bruise in a fight. Finnish artist Riikka Hyvönen proves that girls can also regard bruises and hematomas as signs of bravery. She depicts injuries of roller-derby players – a subculture of daredevil young ladies who aren’t afraid of falling dozens of times on a rink during a match. They are proud of their bruises considering them trophies and fascinating marks of struggle, and the derby-roller community poetically calls them ‘kisses’.