DEVICES: Every traveller has a view on jet lag, the world's annoying way of reminding us we are shifting unnaturally between time zones. As a result there are more methods of combating or dealing with it than perhaps any other piece of guidance on staying healthy during a trip. But forget sleeping tablets, staying awake, doing crosswords - use numbers instead. Read more on RD Mag.
Lots of apps - hundreds of apps, let's face it - claim they can help you fight jet lag.
Now Michigan researchers say mathematical formulas suggest it's possible to adjust to new time zones a bit faster than previously thought, and they created their own free app to help.
Doctors have long said exposure to light is key.
But how much, and when?
Read more on RD Mag
NB:Jet lag image via Shutterstock.