sentence2_structure: Smoking<>tobaccowould most likely have<>a negative impact on the ability of an individual$$$it<>decreases<>stamina and cardiovascular efficiency
sentence1: Although smoke-free environments have not reduced smoking prevalence in most studies, such environments have been shown to decrease daily tobacco consumption among smokers and to increase smoking cessation.
sentence2: Smoking tobaccowould  most likely have a negative impact on the ability of an individual to succeed at physical activities because it it decreases stamina and cardiovascular efficiency.
question: How would smoking tobacco most likely have a negative impact on the ability of an individual to succeed at physical activities?