social jetlag noun [U]
UK /ˌsəʊ.ʃᵊl.ˈdjet.læg/ US /ˌsoʊ.ʃᵊl.ˈdjet.læg/
the feelings of tiredness and confusion that people experience when they do not have a regular sleeping pattern, especially when they sleep for longer at weekends

The University of Adelaide sleep specialist Robert Adams said a growing body of research suggested poor sleep was taking a serious toll on Australians’ health and welfare. A study … found that 31% of survey respondents were suffering social jetlag. That is, the time of their sleep on work nights was more than an hour out of sync with sleeps on weekends or other days off.
[www.guardian.com, 8 July 2018]

nap bar noun [C]
UK /ˈnæp.bɑːʳ/ US /ˈnæp.bɑːr/
a place where you can pay money to sleep for a short time during the day

Last year, a survey … revealed that Londoners are more sleep deprived than the rest of the UK. Now someone has gone and launched a nap bar where overworked, overtired city dwellers can get some much needed shut-eye.
[Time Out, 6 December 2017]

sleep pod noun [C]
UK /ˈsliːp.pɒd/ US /ˈsliːp.pɑ:d/
a space, often a small room with a comfortable chair or small bed, where you can sleep for a short time during the day

Upstairs, on floor two, are seven sleep pods stocked with amenities to lull you into the most restful nap you’ve ever had in New York City. The private rooms have ceilings with twinkling stars, soundproof curtains, live plants, essential oil diffusers, reading lights, noise-canceling headphones, and more. Guests can even upgrade for additional linens.
[www.travelandleisure.com, 2 March 2018]

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