Jet lag is a sleep disorder that occurs when the body's biological clock does not correspond to local time. This is common when traveling across different time zones.
Here are some tips to help prevent jet lag:
Srinivasan V, Singh J, Pandi-Perumal SR, Brown GM, Spence DW, Cardinali DP. Jet lag, circadian rhythm sleep disturbances, and depression: the role of melatonin and its analogs. 2010;27(11):796-813.
Jet lag prevention