While these habits are certainly important, researchers are learning that another factor may also matter: having a consistent daily schedule. Researchers asked 67 adults over the age of 60 about their sleep, daily routines, pain, and mood. The scientists wanted to know whether daily schedules influenced health even when sleep quality differed. Participants who followed regular routines generally felt better than those with irregular schedules. This natural 24-hour clock responds to regular daily events such as waking, eating, social activities, and bedtime.