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You are probably coughing less and finding it easier to breathe

Smoking -- see more articles Reference Desk How Lungs Work (American Lung Association) Find an Expert Women Smoking during Pregnancy (March of Dimes Foundation) Stress and Smoking (National Cancer Institute, Tobacco Control Research Branch) Women and Tobacco Use (American Lung Association) Patient Handouts Risks of tobacco (Medical Encyclopedia) Also in Spanish Smoking and asthma (Medical Encyclopedia) Also in Spanish Smoking and COPD (Medical Encyclopedia) Also in Spanish

The nicotine content of e-cigarettes typically varies between 3 and 36 milligrams (mg)/milliliter (ml) with an average of 10 to 12 mg of nicotine

GWAS of lifetime cannabis use reveals new risk loci, genetic overlap with psychiatric traits, and a causal effect of schizophrenia liability