The stress response and the nervous system

Your body has a built-in alarm system, designed to protect you. Understanding how it works can take a lot of the mystery - and fear - out of stress.

What it is

When your brain senses a threat, real or perceived, it activates the stress response, often called "fight, flight or freeze". Your nervous system releases hormones like adrenaline and cortisol, your heart rate rises, breathing quickens, and blood is redirected toward your muscles. This system evolved to help us survive immediate physical danger, and it still switches on today - whether the "threat" is a difficult meeting, a tight deadline, or a hard conversation.

The trouble is that modern stressors are often ongoing rather than short and sharp, which means the alarm system can stay switched on for far longer than it was designed to. Over time, this takes a toll on sleep, digestion, mood, immunity and concentration. The good news is that the same nervous system that revs up also has a built-in calming pathway - the parasympathetic system - and it can be deliberately activated.

Signs to notice

• Racing heart, shallow or fast breathing, tight chest
• Muscle tension, especially in the jaw, shoulders and neck
• Digestive changes - a "knot" in the stomach, nausea, appetite shifts
• Feeling jumpy, on edge, or easily startled
• Difficulty sleeping despite feeling exhausted
• Racing thoughts or difficulty concentrating
• Feeling shut down, numb or disconnected (a "freeze" response)

What helps

• Slow, deliberate breathing - a longer exhale than inhale directly activates your calming nervous system response.
• Movement helps discharge stress hormones - even a brisk walk or a few minutes of stretching makes a measurable difference.
• Cold water on your face or wrists can quickly calm an activated nervous system.
• Grounding through your senses - noticing what you can see, hear and feel - helps bring you out of a stress spiral and into the present.
• Regular, predictable rest and sleep give your nervous system the recovery time it needs.
• Reduce ongoing stimulants like caffeine if you're already feeling wired.
• Give yourself permission to rest without needing to "earn" it - recovery is part of the work, not separate from it.

When to reach out for help

If your body seems stuck in a stress response much of the time, if you're experiencing panic symptoms, or if stress is affecting your sleep, relationships or health over a period of weeks or months, it's worth speaking to a professional. They can help you understand your particular stress patterns and build a personalised toolkit.

Getting help in South Africa

Cleared Mind's EAP counsellors can help you understand your stress response and develop practical, sustainable ways to manage it. SADAG's Mental Health Line, 011 234 4837, offers further support. Your body isn't working against you - it's trying to protect you, and it can be taught to settle again.