Consistent Sleep Schedule

Research summary

• Evidence specific to fixed bed and wake times draws mainly on a randomized sleep-education trial in college students and observational research on circadian misalignment's effects on cortisol and inflammation, alongside broader reviews of circadian sleep-wake phase disorders.
• Much of the available literature addresses related sleep topics, such as general sleep patterns in students or aging-related sleep changes, rather than testing a fixed-schedule intervention directly, and one linked record contained no usable content.
• The randomized education trial and inflammatory-marker research offer some direct support for the underlying mechanism, but the evidence base specific to schedule consistency (as distinct from sleep regularity more broadly) is thinner and more indirect than for related sleep topics.