Control unit (120) and method (600) for bedding management at a resting area (200) of an animal farm (100). The method (600) comprises determining (601) lying time (310) of animals (101) in the farm (100), at a group level; comparing (606) the determined (601) lying time (310) of the animals (101) with a threshold limit (320); and triggering (607) a bedding management action when the determined (601) lying time (310) of the animals (101) is lower than the threshold limit (320).