social jet lag

Coined by chronobiologist Till Roenneberg and later popularised via his 2012 book Internal Time: Chronotypes, Social Jet Lag, and Why You're So Tired.

social jet lag (uncountable)

1. The difference in the timing of a person's sleep period (measured as average midpoint of his/her sleep period) between workdays and rest days.
   • 2006 April 1, Helen Phillips, “Groggy mornings fuel desire to smoke”, in New Scientist‎, number 2545:

     His^{[Till Roenneberg's]} team also studied stimulant use among the same volunteers and found that those suffering from social jet lag were much more likely to smoke.

   • 2015 December, Siramon Reutrakul, Kristen L. Knutson, Consequences of Circadian Disruption on Cardiometabolic Health, Phyllis C. Zee (editor), Science of Circadian Rhythms, Sleep Medicine Clinics, Volume 10, Number 4, Elsevier, page 460,

     For example, going to bed at a different time on work or school days than on free days or weekends can lead to social jet lag, which may also be associated with cardiometabolic function.

   • 2016, Eva Marco, Elena Velarde, Ricardo Llorente, Giovanni Laviola, “Disrupted Circadian Rhythm as a Common Player in Developmental Models of Neuropsychiatric Disorders”, in Richard M. Kostrzewa, Trevor Archer, editors, Neurotoxin Modeling of Brain Disorders — Life-long Outcomes in Behavioral Teratology, Current Topics in Behavioral Neurosciences, page 163:

     In humans, the most common circadian disruptors include environmental lighting (including both the exposure to low light during daytime or electric light sources during nighttime), shift work (which implies the exposure to abnormal light cycles and the interference of work hours with sleep timing, jet lag from transmeridian travel (which requires the adaptation of body clocks to a new time zone), social jet lag (temporal differences between the endogenous clock and the social clock) and sleep disorders (Bedrosian et al. 2015 in press).

• jet lag

• chronotype