Abstract: Sitting furniture (100) comprising a seat (110), a lower leg support (120) and a chest support (130).

Abstract: An ergonomic chair (300) comprising a seat (310), a lower leg support (320), a chest support (330), and a hip support (360); the seat (310) for supporting the posterior thigh (11) and/or buttocks (12) of a seated user (10), the seat (310) being configured to urge the hip of a seated user (10) in a forward direction; the lower leg support (320) for supporting the anterior side of the lower legs (14) of the seated user (10); the chest support (330) for supporting the chest (15) of the seated user (10) in a forward leaning position of the seated user (10); the hip support (360) is configured to support the anterior hip of a seated user (10) as the seat (310) urges the seated user's (10) hip forwardly towards the hip support (360).