I keep reading that the best exercise is do just go for a walk. Start slow, build up to more distance. Do a little everyday.

If you can get you tube.on your phone or on your tablet there is pulmonary rehab on there and its free. Check it out they even have yogo for copd

Vi spent a year and a half in pulmonary rehab and now go to a private gym 3 days a week. If i miss a week for any reason I feel it. Follow up at the hospital wS $35.00 a minth the gym is only &10.00 plus besides working on my lungs everytime i go i work on upper body on Mondays core on Wednesdays and legs on Fridays. I am stronger now than i was before I got sick

Walk as much as you can . If you cannot walk outside your home , walk around inside. I walk from my patio door to the dining room and around the table, then to the front door and back at least 10 times a day if I can not get out and walk. I also have one of the small pedal pushers and can exercise my legs while I sit and watch TV , and then reverse it and use it to strengthen my arms. Everything helps. You do not need weights, use cans of soup or veggies and do arm exercises . You CAN do it .

Walking is very good and swimming is another. Start slow on both and build up slowly as you go.