Jet lag - Symptoms of jet lag
NHS Choices Medical Reference
The symptoms of jet lag can vary from person to person. The severity of your symptoms will usually depend on the distance travelled and the number of time zones crossed.
Most people only have jet lag symptoms after crossing at least three time zones. Some people may find they get mild symptoms after shorter journeys.
A disturbed sleep pattern is one of the most common symptoms of jet lag.
You may find it difficult to sleep at the correct times. For example, you may be awake at night and sleep during the day.
As well as disturbed sleep, other symptoms can include:
Symptoms will usually last for no more than a day or two, depending on how quickly your body is able to adjust to the new time zone.