Understanding Stress, Sleep, and Health

General Adaptation Syndrome (GAS) :

1- Alarm Phase: consists of perceiving a stressor, which then triggers the fight or flight response

2- Resistance: the resulting changes in your body are collectively referred to as the resistance phase. Also known as the adaption phase due to adapting to the new situation (Brain & Body) 3- Exhaustion Phase: the body starts to eventually become exhausted because it’s limited resources of dealing with stress. Damage to body more risk, medical problems.

Sleep:

The Naturally recurring experience during which normal consciousness is suspended, there are five different stages of sleep during the night, they cycle through the night Stage 1: Hypnogogic Sleep: The initial stage of sleep which lasts about 5 minutes and can include the sensation of gentle falling or floating or a sudden jerking of the body, can be awakened relatively easily from stage 1 sleep without feeling that u have slept at all.

Stage 2: Sleep spindles are recorded through the EEG Patern after clearly being asleep, more relaxed and less responsive to environment, also relatively easy to be woken up by others and report being asleep.Stage 3 & 4: Slow Wave Sleep, because brain produces delta waves, they’re higher and more spread out compared to previous stages, in stage 3 20%-50% recorded EEG brain activity, while in stage 4 it’s greater than 50% which means a very deep state of sleep, that attempts to be woken up will be difficult and if done the person will be disoriented briefly. Heart rate and blood pressure, breathing and body temperature slow down.REM Sleep: Stage of sleep characterized by rapid eye movements, marked brain activity and vivid dreaming.

How Can Stress affect the immune system and make illness more likely? Stress increases the production of glucocorticoids, Which Can depress the immune system, including the formation and functioning of white blood cells such as natural killer (NK) cells. A Depressed immune system makes the body more vulnerable to infection and tumor growth and also slows healing.

Are Stress and cancer related? Stress does not cause tumors to develop, increased glucocorticoid (Part of the stress response) can depress the level of tumor-fighting NK cells. Conversely, decreasing the stress response can increase the NK cells ability to fight tumors, not all cancers are equally affected by these factors.

/*With Continued Stressors, The continued stress response begins to damage the body, leading to a risk of stress-related diseases.

/*What is the order in which coping and the phases of cognitive appraisal occur? Primary Appraisal, Secondary Appraisal and Coping.

/*Which of the following statements about control and stress is true? All above

/*The Natural Killer (NK) cell/ all above statements are true

/*High hostility is associated with a higher heart rate and blood pressure throughout the day./*Relationship between stress and cancer? Stress can depress the level of tumor-fighting NK cells/*During REM Sleep, your All True

Sleep Deprivation affects at least three important psychological areas: attention, mood and performance.