Behavioural adaptations of a ringtail possum include: 1  They nest in hollows in trees, enabling them to stay clear of predators. 2  When habitat is cleared, they adapt quickly and easily, moving into the roof space in houses, or any other available space such as dog kennels or fireplaces. They nest in hollows in trees, enabling them to stay clear of predators. 2  When habitat is cleared, they adapt quickly and easily, moving into the roof space in houses, or any other available space such as dog kennels or fireplaces.
Here your body functions slow down even more. Your brainwaves become longer and slower as your body prepares for the next stage of sleep. NREM Stage 3. Stage 3, also known as slow wave sleep is the last stage of sleep. Here your body is in a deep sleep. Waking someone from this stage would be pretty difficult and if you managed it, they would feel very groggy, tired and disoriented.
Following the N3 stage of sleep, a series of body movements usually signals an ascent to lighter NREM sleep stages. Typically, a 5- to 10-minute period of N2 precedes the initial REM sleep episode. REM sleep comprises about 20 to 25 percent of total sleep in typical healthy adults. NREM sleep and REM sleep continue to alternate through the night in a cyclical fashion. Most slow-wave NREM sleep occurs in the first part of the night; REM sleep episodes, the first of which may last only one to five minutes, generally become longer through the night.