Describe the nature of REM and non-REM periods of sleep

1.Describe the nature of REM and non-REM periods of sleep and how they contribute to healthy functioning and the risk of disease referring to specific diseases/disorders (hint: cardiovascular disease, sleep disorders, etc.). Be able to describe the basic operation of the brain and endocrine functions that regulate circadian rhythms and the sleep-wake cycle.2.Sleep dysfunction is increasingly being viewed as a major contributor to Allostatic Load and to psychological/physiological vulnerability to stress. What are the major measures of sleep behavior used in behavioral medicine? Describe these measures’ connection to increased stress reactivity/vulnerability focusing on 2 to 3 of these sleep parameters with the strongest associations. Justify your choice of the parameters selected.Each question with no more than 350 words.