In Relation in Space (1976) by Marina Abramović was a work that she did with Ulay. They both ran into each other repeatedly for an hour. This was done to show "that self", which was mixing male and female energy into a third component. I was interested in this performance art by Abramović because I was intrigued by the physical aspect of this art. While I was watching this, I could not imagine how physically exhausting it was to be running into someone for an hour. This shows that Abramović was very dedicated to her work, and put her heart and soul into her art.