sentence2_structure: Smoking<>tobaccowould most likely have<>a negative impact on the ability of an individual$$$it<>decreases<>stamina and cardiovascular efficiency
sentence1: Because the study did not include patients with severe asthma, decreased growth and physical activity in childhood would most likely not be a contributing factor to patients' decrease in bone-mineral density.
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?