A dynamic support system comprising: a person support apparatus comprising a closed air system having at least one support piece configured to form a laterally angled sleep surface having a length defined between a first edge and an opposing second edge spaced from the first edge along a longitudinal axis of the support system, the at least one support piece comprising a pair of laterally-spaced fluid bladders (1162, 1166, 1170) communicatively coupled to each other to allow fluid to move between interior cavities of the fluid bladders; a control system comprising a computer having one or more processors in operational control communication with the person support apparatus; and a plurality of sleep sensors configured to sense user sleep patterns and activity during sleep, each sleep sensor of the plurality of sleep sensors in signal communication with the one or more processors and configured to gather data and generate and transmit to the one or more processors signals indicative of the data gathered, each sleep sensor also configured to receive operation control signals from the one or more processors; and wherein the control system is configured to: detect when the user begins to fall asleep; monitor the user's sleep patterns and activities as the user begins to sleep; and activate the support apparatus to rotate the user by one or more of the fluid bladders at a time during sleep, after sleep is detected, by activating the support apparatus at a time delay. a person support apparatus comprising a closed air system having at least one support piece configured to form a laterally angled sleep surface having a length defined between a first edge and an opposing second edge spaced from the first edge along a longitudinal axis of the support system, the at least one support piece comprising a pair of laterally-spaced fluid bladders (1162, 1166, 1170) communicatively coupled to each other to allow fluid to move between interior cavities of the fluid bladders; a control system comprising a computer having one or more processors in operational control communication with the person support apparatus; and a plurality of sleep sensors configured to sense user sleep patterns and activity during sleep, each sleep sensor of the plurality of sleep sensors in signal communication with the one or more processors and configured to gather data and generate and transmit to the one or more processors signals indicative of the data gathered, each sleep sensor also configured to receive operation control signals from the one or more processors; and wherein the control system is configured to: detect when the user begins to fall asleep; monitor the user's sleep patterns and activities as the user begins to sleep; and activate the support apparatus to rotate the user by one or more of the fluid bladders at a time during sleep, after sleep is detected, by activating the support apparatus at a time delay. detect when the user begins to fall asleep; monitor the user's sleep patterns and activities as the user begins to sleep; and activate the support apparatus to rotate the user by one or more of the fluid bladders at a time during sleep, after sleep is detected, by activating the support apparatus at a time delay.