The Effectiveness of Regular Exercise on Improving Sleep in Older Adults

Inclusion Criteria:

* Moderate difficulty sleeping unrelated to a physical illness or psychopathology (determined by the Sleep Questionnaire and Assessment of Wakefulness)
* Currently not physically active on a regular basis
* Body mass index less than 38

Exclusion Criteria:

* Currently physically active on a regular basis
* Diagnosed with a clinically significant sleep disorder
* Mild or no sleep complaints (determined by the Sleep Questionnaire and Assessment of Wakefulness)
* Unstable on medications
* Current smoker
* Consumes more than three alcoholic beverages per day
* Medical condition that may limit participation in moderate-intensity exercise
* Diagnosed with clinical psychopathology