I want to refer you to an article on WEBMED about the vital benefits of exercises for COPD. Perha[s you feel so ill that exercises is the last thing you'd think of doing. Yet this is so important to us.
Exercise will not harm your lungs. When you experience shortness of breath during an activity, this is an indication that your body needs more oxygen. If you slow your rate of breathing and concentrate on exhaling through pursed lips, you will restore oxygen to your system more rapidly.
Here's the reference: