The circadian rhythm is the normal cycle of being awake during the day and sleeping at night and generally dictated by the cycle of daylight and darkness. When we travel, the differences in time at our destination cause a disturbance of our normal circadian rhythm.

Melatonin is produced naturally in the body- it is a hormone made by a part of the brain called the pineal gland. Basically, it is “nature’s sandman”- telling the brain and body that it’s time to go to sleep. Darkness triggers a natural release of Melatonin into the bloodstream, while daylight reduces Melatonin levels.

When we travel across different time zones, it may take a period of time for our Melatonin production to adjust and help correct our sleep cycle,

Travelling across multiple time zones and travelling east to west tends to increase the effects of jet lag.