Until recently, many believed that feeling dreadful after a long-haul flight is the result of simple travel fatigue and the stress of making a long trip. Instead, studies have shown that jet lag is in fact the body’s natural response to the unnatural process of travelling across time zones in a short period. Our circadian rhythm – the same internal clock mechanism that tells birds when to sing – is knocked out of sync by our irregular exposure to daylight.
infographic by: www.expedia.ca
