Many thanks Casper99, I am glad that I found you all, gives me strength and courage to get better, I gave up cigarettes on New Year's Day 2015, due cough, and cough stopped a week later, All was fine till last week , woke up in the morning and was breathless, but I did have muscle aches a few moths back and was not worried about it. When I was confirmed with COPD, the nurse had the pulse oximeter on my finger and spo2 was 98% and pulse beat was 115 beats per minute, then followed with spirometry test. That was the reason the nurse wanted me to go on treadmill at hospital and lung x-Ray. The whole thing has been a bit confusing and upsetting, but I will look after my lungs as of now and try exercising with the muscle aches that I have. Thanks again.