Oxygen supplies every part of the body, not only organs like the lungs and heart but tissues and muscles as well. The larger muscle groups, such as the arms and legs, require a lot of oxygen to move. So when you're not on oxygen and need it, you just don't get the oxygen to the muscles, because when you are oxygen deprived, oxygen will naturally go to protect your vital organs. Therefore, any activity by the larger muscle groups will cause shortness of breath.
You need to slowly build up your muscles with regular exercise. This will make them more efficient, and they will require less oxygen and when your heart and lungs get their oxygen, you will feel less short of breath. You have to keep up with exercise for the rest of your life to maintain this. The more you do, the more you benefit.
There are some folks who will be short of breath no matter what. That would depend on, like Dee said, if you retain CO2 in your lungs. Thus the long slow breaths out help and should become a habit for everyone with COPD.
Oxygen is a life saver undoubtedly, but it also enriches our lives because it allows us to use our muscles without depleting our vital organs, like the brain, kidneys, heart and lungs of their own much needed O2. The effect isn't felt in 5 short weeks, it can take months. Oxygen gives us those months to use wisely.
Stick with the exercises, Bobby, and you will be saying this to the next newcomer!













