- Irregular Sleep Connected to Bad Moods and Depression. Even when it comes to just their mood the next day, people whose waking time varies from day to day may find themselves in as much of a foul mood as those who stayed up extra late the night before, or got up extra early that morning https://labblog.uofmhealth.org/body-work/irregular-sleep-connected-to-bad-moods-and-depression-study-shows 5 comments science