Saturday, May 26, 2012

Social jetlag

Social Jetlag and Obesity
People who have different sleep patterns at the weekend than they do during the work week may get "social jet lag," according to new research. That shift in our natural sleep patterns is linked to obesity.
For every hour of social jet lag, the risk of being overweight or obese rises about 33%, says researcher Professor Till Roenneberg.

'Social jetlag' is measured as the average midpoint of a person's sleep on weekdays compared to weekends. The difference in those numbers gives the 'social jet lag'. So, a person who goes to bed at 1 am and gets up at 6 am during the working week, and goes to bed at 1 am but only gets up at 9am at weekends for example, would have 1.5 hours of social jet lag.

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