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.
Updated December 16, 2014. There are five phases of sleep: stages 1, 2, 3, 4 and REM (rapid eye movement). Usually when you are sleeping, you begin at stage 1 and go through each stage until reaching REM sleep, and then you begin the cycle again. Each complete sleep cycle takes from 90 to 110 minutes. Your brain acts differently in each stage of sleep. In some of the stages, your body may make movements, but in others your arms and legs will be immobile. Having good sleep habits will make sure you get each type of sleep that you need.