Endurance

• Smokers need to work harder than non-smokers doing the same activity. That means you cannot train as long as you might want when smoking. Also, your quality of training may suffer.
• Smoking has an immediate effect on respiration by increasing airway resistance and therefore reducing the amount of oxygen absorbed into the blood.
• Smokers produce more phlegm and are more likely to develop a chronic cough than non-smokers. As phlegm builds up in the airways it make breathing
  more difficult.

	Fact: A smoker's heart beats faster, on average, than a non-smoker's heart.

• Smoking reduces the oxygen available to your muscles and lungs during exercise because oxygen in the blood is replaced with carbon monoxide.
• Smoking reduces lung function and slows
  lung growth

• Smoking narrows the bronchial tubes in the lungs, making it more difficult for your body to get the oxygen it needs to recover after exercise.

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Quitting checklist