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Asher Proeger of UCLA (L) and Tristan Mykel of USC (R) prepare for the Sperm Racing competition championship in Los Angeles, California on April 25, 2025. At the Los Angeles event on Friday night, a man in a lab coat used pipettes to place samples of semen -- collected from contestants ahead of time -- onto tiny two-millimeter-long "tracks." The race track is magnified 100 times by a microscope, then filmed by a camera that 17-year-old high schooler Eric Zhu says transfers the image to a 3D animation software before the final video is broadcast to the audience. The unusual sport was invented by Zhu, who raised over a million dollars to organize the event to raise awareness of male infertility. (Photo by Patrick T. Fallon / AFP) (Photo by PATRICK T. FALLON/AFP via Getty Images)