Xiamen University

Entrain: the free app that could help beat jetlag

The researchers say exposure to light is the key to beating jet lag - and built a free app to tell people how to do it     Michigan researchers say mathematical formulas suggest it is possible to adjust to new time zones far faster than previously thought. Doctors have long said exposure to light is key, but admit that working out how to best adapt is complex. 'If you get light in the wrong time or wrong way, it'll send you the wrong direction,' said University of Michigan math professor Daniel Forger, who led the research and created a free app to
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