Understanding and features of sleep problems caused by disrupted body clocks

Being alert to excessive sleepiness and/or insomnia in shift workers may prevent comorbidities and accidents.

• Not all shift workers experience shift-worker disorder (SWD).
• Sensitivity to shift work could be identified through self-reported difficulties with functioning without consolidated sleep.
• Preference for early-day activity may indicate a higher sensitivity to shift work.
• Previous experiences of insomnia due to sleep challenges may also suggest a vulnerability to SWD.

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