Post-COVID Breathlessness and Fatigue: A Recovery Guide

Some people recover from COVID-19 or other viral infections within days. Others are left with breathlessness, fatigue, a racing heart or "brain fog" for weeks or months. When symptoms last beyond around 12 weeks, this is often called long COVID or post-COVID condition.

Recovery is possible, but pushing too hard too soon can set you back.

Seek medical advice before starting exercise after COVID-19, and get urgent help if you have chest pain, severe breathlessness, fainting, or palpitations. Some of these symptoms need investigation first.

Common symptoms

• Breathlessness on exertion
• Fatigue that isn't relieved by rest
• Worsening of symptoms after activity, sometimes a day or two later (post-exertional symptom exacerbation)
• Palpitations or a fast heart rate on standing
• Difficulty concentrating
• Muscle and joint aches

Pacing: the most important tool

If activity makes your symptoms worse a day or two later, the priority is not to push through. Instead, use pacing:

1. Find your baseline: the amount of activity you can do on a bad day without a crash.
2. Plan your day: spread activities out, alternating with rest.
3. Break tasks into smaller parts.
4. Increase very gradually, only when your symptoms are stable.

Breathing techniques

Many people develop a rapid, shallow, upper-chest breathing pattern after illness. Breathing retraining can help:

• Breathe gently through your nose
• Use tummy (diaphragmatic) breathing
• Try slow breathing, with a slightly longer breath out than in

See our guide on breathing exercises.

Returning to exercise

When symptoms have stabilised and your doctor agrees:

• Start with very gentle activity, like short walks and stretching
• Use the talk test: you should be able to talk comfortably
• Increase gradually, by small amounts
• If symptoms flare, go back a step

Other things that help

• Prioritise sleep
• Eat regularly and stay hydrated
• Manage stress
• Connect with others

How physiotherapy helps

A physiotherapist can assess your breathing and exercise tolerance, teach pacing and breathing retraining, and guide a gradual, symptom-guided return to activity.