Avoid stressful activities and vigorous exercise for two hours before going to bed.

The best protection is to avoid outdoor exercise when pollution levels are high.

Morning or afternoons are best; when possible, avoid strenuous exercise at night.

Have the person rest as needed and avoid strenuous exercise.

Avoiding exercise or foods that cause the mentioned symptoms is very important.

People with osteoarthritis may avoid exercise out of concern that it will cause pain.

Remember: asthma is not a reason to avoid exercise.

They have been told to avoid exercise because it would induce attacks of their disease.

But avoid exercise during the 3 to 4 hours before bedtime, because it may keep you awake.

You should avoid exercise after an injection, because it can make side effects worse.