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Chronic vs Acute Stress and the Effect on Your Body

Chronic vs Acute Stress and the Effect on Your Body

Written by Amber Garrett - Osteopath | 13th March 2026

Stress is an inevitable part of life, but not all stress affects your body in the same way. Understanding the difference between acute and chronic stress can help you recognise when your body needs professional support.

Acute Stress: Your Body's Natural Alarm System

Acute stress is your body's immediate response to a perceived threat or challenge. When you narrowly avoid a car accident or about to deliver an important presentation, your body activates its “fight, flight, or freeze” response. Your heart rate increases, muscles tense, and stress hormones like cortisol and adrenaline flood your system.

This response is actually protective and designed to help you react quickly to danger. The key feature of acute stress is that it ends. Once the stressful event passes, your body typically returns to its normal state within hours or days. Acute stress can even be beneficial in small doses, keeping you alert and motivated.

Chronic Stress: When the Alarm Never Stops

Chronic stress is different. It occurs when your body remains in a heightened state of alert for weeks, months, or even years. Unlike acute stress, there's no clear endpoint. Work pressures, financial concerns, relationship difficulties, or ongoing health issues can keep your stress response constantly activated.

When your body never fully relaxes, the consequences become significant and far-reaching.

How Chronic Stress Affects Your Body

  • Musculoskeletal System: Persistent muscle tension is one of the most common physical manifestations of chronic stress. Your shoulders, neck, and back bear the brunt, leading to tension headaches, jaw clenching, and chronic pain patterns. Over time, this constant tension can alter your posture and movement patterns.
  • Breathing Pattern Disorders: Stress often leads to shallow, chest-based breathing rather than deep diaphragmatic breathing. This affects oxygen delivery to tissues and perpetuates the stress response.
  • Cardiovascular System: Prolonged elevation of stress hormones increases your heart rate and blood pressure, potentially contributing to hypertension and increased cardiovascular risk.
  • Digestive System: Chronic stress disrupts your gut function, potentially causing or worsening conditions like irritable bowel syndrome, acid reflux, and digestive discomfort.
  • Immune Function: Extended periods of stress suppress your immune system, making you more susceptible to infections and slowing your body's healing processes.
  • Sleep and Recovery: Stress interferes with your ability to achieve restorative sleep, creating a vicious cycle where poor sleep increases stress sensitivity, and stress further disrupts sleep.

How We Can Help

At Canterbury Health Hub, we recognise that chronic stress creates real, physical changes in your body. Through treatment we can help address the muscular tension and structural imbalances that stress creates. We can help release tight muscles, improve circulation, and support your nervous system's return to balance. We may also include lifestyle advice and exercises to help your body better cope with stress, like diaphragmatic breathing or walking in the sunshine.

If you're experiencing persistent muscle tension, headaches, or pain that won't resolve, chronic stress may be contributing to your symptoms. Canterbury Health Hub is here to help your body recover and build resilience against life's inevitable pressures.