Why is my breathing hard when I exercise?
What is Exercise Induced Bronchoconstriction (EIB)?
Exercise Induced Bronchoconstriction (EIB) is when the small airways in your lungs narrow during exercise, making it harder to breathe. This can happen even if you don’t have asthma.
What Does EIB Feel Like?
- Coughing when or after running
- Wheezing
- Tight chest
- Feeling short of breath or tired too fast
When Do Symptoms Happen?
- Sometimes during exercise, especially if it’s hard or in cold air.
- Often worse after you stop — usually 10–15 minutes after finishing.
- Usually improves within 30–60 minutes.
What Helps?
Warm up first
→ Do a 10-15 minute warm-up with light jogging, walking, or short bursts of running.
Use your inhaler if prescribed
→ Your doctor might give you a “blue” or “red and white” inhaler to use before PE or sports.
Avoid triggers
→ Like cold air, pollution, or strong smells.
With the right help, you can still do your favourite things!
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Smoking is not allowed anywhere on the hospital campus. For advice and support in quitting, contact your GP or the free NHS stop smoking helpline on 0800 169 0 169.
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Contact us
Cambridge University Hospitals
NHS Foundation Trust
Hills Road, Cambridge
CB2 0QQ
Telephone +44 (0)1223 245151
https://www.cuh.nhs.uk/contact-us/contact-enquiries/