From what i heard, when carbon monoxide is in a person's blood (smoker or non smoker) it can kill you, it is a sign of poison in your blood. With smokers it is worse because they are smoking something that has a high content of carbon monoxide which can cause heart problems, lung cancer, birth defects, etc. So thats what i think
Depends on genetics, past attempts, there’s not a straight precent there’s a lot of factors.
When determining when to begin sports or other strenuous physical
activities after an injury, the time period of rest is dependent
entirely on the person's unique healing abilities. This means that some
individuals will be able to come back faster, while others may require
more time, and may even not be able to perform as well as they used to
before their injury.
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