- 65 or more years old
- Able to read and speak English
- Willing to complete survey asking about your preference for times of the day
- Not currently diagnosed with a serious medical condition
- Not experiencing severe and untreated mental health difficulties
- Not currently diagnosed with a chronic pain condition (fibromyalgia, osteoarthritis, or arthritis are okay)
- Not currently diagnosed with a sleep disorder (insomnia is okay)
- Unable to provide informed consent