Health conditions

Exercising With COPD or Asthma (and on Haze Days)

Written & reviewed by Thurairaj Manoharan · 18 May 2026

Exercise is safe and beneficial for most people with COPD or asthma, improving breathing and stamina. How to train, including haze-day care.

A lung condition like COPD or asthma can make exercise feel risky, the very breathlessness that exercise causes is the thing you are trying to avoid. But for most people, sensible, well-managed exercise is not only safe, it is one of the best things you can do, improving your fitness, breathing efficiency and quality of life. The key is building up gradually, working with your doctor, and, in Malaysia, knowing how to handle haze days.

Why exercise helps your lungs

It seems counterintuitive that exercising the breathless should help, but it does. Regular activity makes your heart, lungs and muscles more efficient, so daily tasks demand less of your breathing over time. It strengthens the muscles involved in breathing and movement, improves stamina, and can reduce the breathlessness that limits life with a lung condition. This is exactly why pulmonary rehabilitation, a guided exercise programme, is a cornerstone of managing COPD. Avoiding activity, by contrast, leads to deconditioning, which makes breathlessness worse, a downward spiral that exercise reverses.

What to do

Build up gently, ideally with your doctor’s guidance:

  • Gentle aerobic activity, such as walking, is the foundation. Start with short, comfortable sessions and build gradually, using a pace where you are working but not overwhelmed.
  • Strength training, to support the muscles used in daily activity and breathing, from strength for beginners over 40.
  • Breathing techniques, which a physiotherapist or rehab programme can teach to help manage breathlessness during effort.

Progress slowly, and expect that some breathlessness during exercise is normal and not dangerous in itself, though you should learn your own safe limits with your doctor.

Be ready and know your limits

A few sensible precautions make exercise safer:

  • Keep your reliever inhaler to hand if you have asthma, and consider your doctor’s advice on using it before exercise if exercise triggers symptoms.
  • Warm up gently, which can reduce exercise-induced symptoms.
  • Know your warning signs, and stop and rest, using your medication as advised, if you become more breathless than expected, wheezy, or unwell.

Haze days need special care

This is crucial in Malaysia. People with asthma or COPD are especially sensitive to the poor air quality of the haze season. During haze, avoid outdoor exercise entirely, and either train indoors in a clean-air, air-conditioned space, such as mall walking or a home session, or rest if your symptoms are flaring. Follow air-quality advisories and your doctor’s guidance closely, as we discuss in should you exercise during the haze. The same caution applies on very hot, humid days, which can also trigger symptoms.

Work with your doctor

This is general fitness education, not medical advice. If you have COPD or asthma, especially if it is moderate, severe or poorly controlled, get your doctor’s guidance before starting or increasing exercise, and ask about pulmonary rehabilitation, which is excellent. Seek prompt medical help for severe breathlessness, a flare that does not respond to your medication, or any chest pain. We always work alongside your medical team.

With sensible, gradual training and good haze-day awareness, most people with a lung condition can become fitter, breathe more easily and do more. If you would like a carefully paced plan coordinated with your doctor, we run home-visit assessments across KL and Selangor.

For the full picture, read the complete guide to this topic →

Written & reviewed by

Thurairaj Manoharan

Physiotherapist · 13+ years in healthcare

Paralysed by Guillain-Barré Syndrome as a teenager, Thurairaj rebuilt his body through physiotherapy, lived proof that the right movement, applied consistently, restores function.

Frequently asked questions

Is exercise safe with asthma or COPD?

For most people with well-managed asthma or COPD, exercise is safe and genuinely beneficial, improving fitness, breathing efficiency and quality of life. It should be built up gradually and, especially with COPD or poorly controlled asthma, guided by your doctor. Keep your reliever inhaler to hand and know your warning signs.

What exercise is best for lung conditions?

A combination of gentle aerobic activity, such as walking, and strength training works well, building up slowly. Aerobic exercise improves breathing efficiency and stamina, while strength supports the muscles used in daily activity. Your doctor or a pulmonary rehabilitation programme can tailor this.

Should I exercise outdoors during the haze with a lung condition?

No. People with asthma or COPD are especially sensitive to poor air quality, so during the haze you should avoid outdoor exercise and train indoors in a clean-air environment instead, or rest if symptoms flare. Always follow your doctor's advice during poor air quality.

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