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Results of giving up. 20 minutes – blood pressure and pulse rates return to normal. 8 hours – nicotine and carbon monoxide levels in blood reduce by half, oxygen returns to normal. 24 hours – carbon monoxide will be eliminated from the body. 48 hours – there is no nicotine left in the body. 72 hours – breathing becomes easier. 2-12 weeks – circulation improves. 3-9 months – coughs, wheezing and breathing problems improve. 5 years – risk of heart attack falls to about half that of a smoker. 10 years – risk of lung cancer falls to half to that of a smoker.
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