Missing from our discussion on sleep tips during your flight was the topic of jet lag, which is now included, according to the National Sleep Foundation, as “one of the 84 known or suspected sleep disorders that affects millions of people each year.”
Jet lag is when the body’s biological clock, as a result of time zone changes, is out of sync with local time. We’ve all experienced overwhelming daytime sleepiness or nighttime alertness after a long flight, and this is because of our body’s slow adjustment from their original biological schedules.
Jet lag occurs in different degrees of severity, and symptoms typically last longer after eastward flights. Flying east generally yields difficulty getting to sleep, and flying west usually results in early-morning awakenings.
Individuals over 50 years of age are particularly susceptible to develop jet lag and flight-related sleep difficulties. Individual susceptibility, however, varies greatly, and pre-existing sleep disorders or deprivation may intensify jet lag symptoms, which include the following:
- strong daytime sleepiness
- nighttime alertness
- loss of appetite
- gastrointestinal dysfunction
- mood disturbance
- trouble concentrating or focusing
To prevent or reduce jet lag, gradually adjusting your bedtime to coincide with the time zone of your destination in the days before travel may prove effective, researchers say. It takes, on average, about a day for each hour of time zone change to recover from jet lag.
In addition to adjusting your sleep schedule, natural sleep aids, such as Siestra, may help reduce the amount of sleep lost as a result of jet lag. Nicotine and alcohol should be avoided. Daytime sleepiness, however, can be treated with caffeine, as long as it is not taken in the few hours before bedtime.