> Which is fun, but of course both risk factors are addictive as smokers can be both. All the person around me who are doing sport do not smoke and all smokers

> Which is fun, but of course both risk factors are addictive as smokers can be both. All the person around me who are doing sport do not smoke and all smokers around me do not do sport. It's worse than "smokers can be both", it's "smokers are usually both".