A disruption of the circadian cyclethe metabolic and glandular rhythms that are central to our workaday life seems to be involved in many$$$ if not most$$$ cases of depression; this is why brutal insomnia so often occurs and is most likely why each day's

A disruption of the circadian cyclethe metabolic and glandular rhythms that are central to our workaday life seems to be involved in many$$$ if not most$$$ cases of depression; this is why brutal insomnia so often occurs and is most likely why each day's pattern of distress exhibits fairly predictable alternating periods of intensity and relief.