title: Increase of muscle tonus after tobacco smoking.
mesh_terms: D000328:Adult; D003213:Conditioning, Psychological; D004305:Dose-Response Relationship, Drug; D004576:Electromyography; D006801:Humans; D008875:Middle Aged; D009126:Muscle Relaxation / Q000187:drug effects; D009129:Muscle Tonus / Q000187:drug effects*; D009538:Nicotine / Q000494:pharmacology*; D012907:Smoking / Q000523:psychology*; D013997:Time Factors
chemical_list: D009538:Nicotine