A system configured to manage a sleep session of a subject, the system comprising: one or more sensory stimulators configured to provide sensory stimuli to the subject during the sleep session; one or more sensors configured to generate output signals conveying information related to brain activity of the subject; and one or more physical computer processors configured by computer readable instructions to: determine brain activity parameters of the subject based on the output signals, the brain activity parameters being indicative of sleep stages of the subject; determine the sleep stages of the subject based on the brain activity parameters, the sleep stages including a first sleep stage, a second sleep stage that is deeper than the first sleep stage, and a third sleep stage that is deeper than the first sleep stage and the second sleep stage; predict transitions from the second sleep stage to the third sleep stage based on the brain activity parameters; and control the one or more sensory stimulators to: provide sensory stimulation to the subject responsive to the subject entering the second sleep stage from the first sleep stage; and cease providing sensory stimulation to the subject responsive to a prediction of a transition from the second sleep stage to the third sleep stage indicating that the subject is about to enter the third sleep stage; wherein the one or more physical computer processors are configured such that: the first sleep stage includes one or more of REM sleep, NREM stage N1 sleep, or a lighter portion of NREM stage N2 sleep; the second sleep stage includes a deeper portion of NREM stage N2 sleep; and the third sleep stage includes NREM stage N3 sleep. one or more sensory stimulators configured to provide sensory stimuli to the subject during the sleep session; one or more sensors configured to generate output signals conveying information related to brain activity of the subject; and one or more physical computer processors configured by computer readable instructions to: determine brain activity parameters of the subject based on the output signals, the brain activity parameters being indicative of sleep stages of the subject; determine the sleep stages of the subject based on the brain activity parameters, the sleep stages including a first sleep stage, a second sleep stage that is deeper than the first sleep stage, and a third sleep stage that is deeper than the first sleep stage and the second sleep stage; predict transitions from the second sleep stage to the third sleep stage based on the brain activity parameters; and control the one or more sensory stimulators to: provide sensory stimulation to the subject responsive to the subject entering the second sleep stage from the first sleep stage; and cease providing sensory stimulation to the subject responsive to a prediction of a transition from the second sleep stage to the third sleep stage indicating that the subject is about to enter the third sleep stage; wherein the one or more physical computer processors are configured such that: the first sleep stage includes one or more of REM sleep, NREM stage N1 sleep, or a lighter portion of NREM stage N2 sleep; the second sleep stage includes a deeper portion of NREM stage N2 sleep; and the third sleep stage includes NREM stage N3 sleep. determine brain activity parameters of the subject based on the output signals, the brain activity parameters being indicative of sleep stages of the subject; determine the sleep stages of the subject based on the brain activity parameters, the sleep stages including a first sleep stage, a second sleep stage that is deeper than the first sleep stage, and a third sleep stage that is deeper than the first sleep stage and the second sleep stage; predict transitions from the second sleep stage to the third sleep stage based on the brain activity parameters; and control the one or more sensory stimulators to: provide sensory stimulation to the subject responsive to the subject entering the second sleep stage from the first sleep stage; and cease providing sensory stimulation to the subject responsive to a prediction of a transition from the second sleep stage to the third sleep stage indicating that the subject is about to enter the third sleep stage; wherein the one or more physical computer processors are configured such that: the first sleep stage includes one or more of REM sleep, NREM stage N1 sleep, or a lighter portion of NREM stage N2 sleep; the second sleep stage includes a deeper portion of NREM stage N2 sleep; and the third sleep stage includes NREM stage N3 sleep. provide sensory stimulation to the subject responsive to the subject entering the second sleep stage from the first sleep stage; and cease providing sensory stimulation to the subject responsive to a prediction of a transition from the second sleep stage to the third sleep stage indicating that the subject is about to enter the third sleep stage; wherein the one or more physical computer processors are configured such that: the first sleep stage includes one or more of REM sleep, NREM stage N1 sleep, or a lighter portion of NREM stage N2 sleep; the second sleep stage includes a deeper portion of NREM stage N2 sleep; and the third sleep stage includes NREM stage N3 sleep. the first sleep stage includes one or more of REM sleep, NREM stage N1 sleep, or a lighter portion of NREM stage N2 sleep; the second sleep stage includes a deeper portion of NREM stage N2 sleep; and the third sleep stage includes NREM stage N3 sleep.