The invention provides a bed capable of providing postural support to a user, the bed comprising: a headrest (10) having an adjustable height； a backrest (12) having an adjustable angle (α) of inclination to incline the user's back； and a shoulder and arm rest (11) positioned between the headrest and the backrest； wherein the headrest (10), backrest (12) and the shoulder and arm rest (11) are configurable to form a channel (14) extending between and separating the headrest (10 and the backrest (12) when the headrest (10) and backrest (12) are adjusted in elevated positions, and configurable to form a substantially even sleeping surface of the backrest (12) and shoulder and arm rest (11) without forming the channel (14) when the backrest (12) is adjusted to a flat angle of inclination. The invention also provides an insert capable of being inserted into an outer bed frame in the construction of the bed, and a kit for construction of the bed.
