In June last year, 29-year-old Berlin-based rollerskater Oumi Janta posted a short video on her Instagram that shows her dancing on her skates. She is dressed in egg-yolk yellow sports shorts and a matching T-shirt, and shot against a background of bright blue sky. Bassy house music is playing and she moves effortlessly, doing a kind of salsa-inflected moonwalk. “Bit windy, weather on point tho, everyone is vibing,” reads the caption. “Just jamming is good for now.” In the middle of a gruelling year, the sunny atmosphere and Janta’s skill and easy joy struck a chord. The video has since racked up 2.9m views and rollerskating has become a new It hobby.