https://blackroll.com/ch-de/account/exercises/premium/back-box-online-trainings2025-11-20T11:55:20+01:00weekly0.5https://storage.googleapis.com/oneworld-prod/assets/BR_01_Back_Box_INTRO_DE_optimized.mp4?v=1650899286BR+01+Back+Box+INTRO+DE+optimizedhttps://blackroll.com/ch-de/account/exercises/premium/knee-box-trainings2025-11-20T11:52:48+01:00weekly0.5https://blackroll.com/ch-de/account/exercises/premium/neck-box-trainings2025-11-20T11:53:55+01:00weekly0.5https://storage.googleapis.com/oneworld-prod/assets/BR_05_Neck_Box_INTRO_DE_opt.mp4?v=1650974521BR+05+Neck+Box+INTRO+DE+opt+dummy