Some people cannot think straight because of lack of sleep. It seems their body system is not working despite the effort. Sleeping is so particular with warm-blooded creatures in the blue planet. The sleep pattern differs from one species to another. The sleep time duration will take more than 8 hours and commonly seen in warm-blooded wild animals. Humans are quite unique with such sleep-wake pattern.
Stage 1: It describes that people are still fully awake despite closing the eyes. The person is so aware what’s going on in his or her environment. You can still hear the sounds within the area. For some people, the different sounds at night are part of their preparation to sleep. They can even start to imagine as music to their ears.
Stage 2: At this stage, the muscle ease up, breath slow and heartbeat decreases its rate. It means that the person is starting to fall into a deep sleep. They are starting to walk in the pathway of dreamland. The sounds of his or her environment started to fade away from their senses.
Stage 3: Nobody can wake up the person easily. It is a stage where people talk or sleepwalk while under the deepest sleep. This is the time a person had their rapid eye movement and dream about of something. A person would be lucky if they can able to remember their particular dreams as waking up. Hopefully, it is not a nightmare episode of a dream.
Stage 4: In this stage, a person is in the state of deepest sleep. If somebody had disturbed you, confusion will be the result. Whatever the reason, once wake up at night, Stage 2, 3 and 4 will be the pattern for a couple of times. It is like coping up with the loss of sleep in between hours at night.