Previously unknown sleep pattern revealed

There's no need to panic if you didn't get a solid eight hours of beauty sleep last night. According to new University of Sydney research, sleep duration naturally waxes and wanes over a period of days regardless of individual lifestyle, timing of sleep or waking, and social and environmental influences.

With further research, the discovery could have important implications for predicting work performance, managing fatigue-related accidents after shift work, and treatment recovery in clinical populations.

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