A recent survey conducted among teenagers revealed that those who regularly engage in physical exercise report higher levels of happiness than those who do not exercise regularly. The researchers involved in the study claim that the correlation indicates that physical exercise leads to increased happiness among adolescents.

However, some critics argue that the survey results may be influenced by other factors. To strengthen their argument about the impact of exercise on happiness, the researchers responded by stating that a controlled group, consisting of non-exercising teenagers, exhibited lower happiness levels when compared to another controlled group that exercised consistently.