Night shifts: chronotype and social jetlag

McKenna and Wilkes’s review on optimising sleep for night shifts is insightful and useful.1 Chronotypes and social jetlag are important relevant factors.2345 Chronotype is an individual’s circadian sleeping pattern when they have no commitments influencing waking and sleeping.2 At one extreme of the chronotype spectrum are “larks,” whose circadian rhythm dictates that they go to bed early and rise early. …