The Big 4 - The Stress Response System

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The stress response is part of the Limbic system,

the reactionary part of our brain.

Illustration cross section of a human brain, with the Limbic system highlighted in red.

When our experience causes a stress response, an area of the brain called the amygdala reacts instantly, sending a distress signal to…

the hypothalamus. This area of the brain is a kind of command centre for our autonomic nervous system, which controls involuntary body functions such as
heart-rate, blood-pressure, and breathing.

These changes can happen faster than we are aware, 

even before our higher-order vision system
understands what we are seeing.

This is where our fight, flight, & freeze reactions come from.

illustration of a woman showing aggression.
illustration of a woman running away.
illustration of a woman frozen in shock.

Chronically activating this stress response
can contribute to both physical and mental health problems.

Identifying Triggers of Stress

Physical

Muscle tension
Shallow breathing
Upset stomach
Rapid heart rate
Headaches/Dizziness
Nausea
Chronic fatigue
Frequent colds or flu

Cognitive

Memory problems
Inability to concentrate
Poor judgement
Constant worries
Racing thoughts
Overthinking

Behavioural

Withdrawal/Avoidance
Crying
Procrastination
More accident prone
More conflicts
Change in appetite and
eating patterns
Change in daily habits

Emotional

Irritability
Fear
Guilt
Nervousness
Frustration
Feeling overwhelmed
Dread
Anger

Practicing the Big 4 skills
has been clinically shown to reduce the stress response
when we encounter stress in our lives.