13:40Gym StarsSeries 3Leaving Your Comfort ZoneCBBC Duration: 22 minutes Thu 13th Aug 2020, 13:40 on CBBC ChannelThere’s a new Gym Star in the making - nine-year-old Kosei! Show more GenresChildren'sFactualChildren'sSportBrandGym StarsSeriesGym Stars: Series 3 Source: BBC Online