A system for a healthcare facility, comprising: a plurality of patient support systems (100, 300, 400), each patient support system comprising: a patient support apparatus having a base frame and a patient support surface; at least one sensor coupled to the patient support apparatus; at least one light emitting device capable of emitting light in at least a first range of visible wavelengths between about 440 nm and about 490 nm; a controller configured to: receive the or each output from the at least one sensor; determine a stage of sleep of a patient on the patient support surface in dependence on the or each received output; receive a wake-up signal; and after receipt of the wake-up signal, activate the or each light emitting device to emit light substantially only in the first range of visible wavelengths when the controller next determines that the patient is in a light stage of sleep; and, communications circuitry configured to communicate with a network; and a computer device remote from the patient support systems, comprising communications circuitry configured to communicate with the network, the computer device configured to: receive an input from a user, such as a healthcare professional, to initiate a wake-up process; request stage of sleep data for each patient associated with each of the plurality of patient support systems; receive the stage of sleep data for each patient; send a wake-up signal to each patient support system where the associated patient is in a light stage of sleep; and indicate to the user the patient support systems which were sent a wake-up signal. a plurality of patient support systems (100, 300, 400), each patient support system comprising: a patient support apparatus having a base frame and a patient support surface; at least one sensor coupled to the patient support apparatus; at least one light emitting device capable of emitting light in at least a first range of visible wavelengths between about 440 nm and about 490 nm; a controller configured to: receive the or each output from the at least one sensor; determine a stage of sleep of a patient on the patient support surface in dependence on the or each received output; receive a wake-up signal; and after receipt of the wake-up signal, activate the or each light emitting device to emit light substantially only in the first range of visible wavelengths when the controller next determines that the patient is in a light stage of sleep; and, communications circuitry configured to communicate with a network; and a patient support apparatus having a base frame and a patient support surface; at least one sensor coupled to the patient support apparatus; at least one light emitting device capable of emitting light in at least a first range of visible wavelengths between about 440 nm and about 490 nm; a controller configured to: receive the or each output from the at least one sensor; determine a stage of sleep of a patient on the patient support surface in dependence on the or each received output; receive a wake-up signal; and after receipt of the wake-up signal, activate the or each light emitting device to emit light substantially only in the first range of visible wavelengths when the controller next determines that the patient is in a light stage of sleep; receive the or each output from the at least one sensor; determine a stage of sleep of a patient on the patient support surface in dependence on the or each received output; receive a wake-up signal; and after receipt of the wake-up signal, activate the or each light emitting device to emit light substantially only in the first range of visible wavelengths when the controller next determines that the patient is in a light stage of sleep; and, communications circuitry configured to communicate with a network; and a computer device remote from the patient support systems, comprising communications circuitry configured to communicate with the network, the computer device configured to: receive an input from a user, such as a healthcare professional, to initiate a wake-up process; request stage of sleep data for each patient associated with each of the plurality of patient support systems; receive the stage of sleep data for each patient; send a wake-up signal to each patient support system where the associated patient is in a light stage of sleep; and indicate to the user the patient support systems which were sent a wake-up signal. receive an input from a user, such as a healthcare professional, to initiate a wake-up process; request stage of sleep data for each patient associated with each of the plurality of patient support systems; receive the stage of sleep data for each patient; send a wake-up signal to each patient support system where the associated patient is in a light stage of sleep; and indicate to the user the patient support systems which were sent a wake-up signal.