Tick for body clock theory

SCIENTISTS have a theory about how biological clocks adjust to having less sunlight in winter, helping us better understand the impact of jet lag and shift work.

Edinburgh University scientists studied the daily activity cycle in plants and discovered a process that enables the plants' genes to respond to the times of dawn and dusk each day.

The findings shed light on how our bodies respond when our daily rhythms are interrupted, for example by travel or unsociable working hours.

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