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Smoker's Cough & Lung Cancer Symptoms, Treatment, Causes Smoking HOW QUITTING SMOKING IMPROVES YOUR LUNGS Timeline Day 1: Heart rate & blood pressure normalize. Lungs begin clearing toxins. Week 1: Breathing improves; coughing & shortness of breath reduce. Month 1: Lungs Ex smoker coughs up black tar in video that will put you off cigarette Smoker's Phlegm Health Education Model Health Edco Key Stage 3 Science: Student Book 1 by Collins Issuu
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