The conversation between human and AI assistant.
[|Human|] Provide an example of an appropriate hypothesis for the following research study.
[|AI|] One appropriate hypothesis for the research study examining the effects of exercise on physical and mental health could be: "Engaging in regular exercise will lead to significant improvements in physical fitness measures and self-reported mental health outcomes compared to a control group who do not engage in regular exercise."
[|Human|] 
Provide an example of an appropriate hypothesis for the following research study.