We are not doctors on here, but like you, we are or have quit smoking.
I think you should post your questions to the doctor or even better, go and see your doctor. You need to be assessed according to age, weight and health. Only a physician can answer your questions.
If you need support on your quit, then we are here for you.
I know of no mechanism by which cardiovascular exercise can repair lung tissue damaged by smoking. Only time will address the tar already deposited in your lungs.
Exercise is beneficial as a preventive measure for many cancers and heart disease, but whether it is dangerous for you would depend on the results of an assessment by your physician.
The situation is not gloomy, however, and one immediately begins to benefit from improved health in many ways after quitting.
Copyright 1994-2016 MedHelp International. All rights reserved.
MedHelp is a division of Aptus Health.
This site complies with the HONcode standard for trustworthy health information.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.