Sleep quality and marital satisfaction are closely linked, with co-sleeping dynamics playing a significant role in this relationship. This narrative review explores the complex interactions between co-sleeping, sleep disorders, and relationship health, highlighting both the benefits and challenges of shared sleep environments. While co-sleeping can enhance emotional intimacy and improve sleep synchronization, it can also exacerbate sleep disturbances, particularly in the presence of sleep disorders, such as insomnia or obstructive sleep apnea. The concept of “sleep divorce,” in which partners sleep separately to optimize sleep quality, is discussed as a potential strategy to balance these challenges. Future research should focus on personalized interventions that consider the unique needs of couples, the impact of sleep disorders on co-sleeping, and the long-term effects of different sleeping arrangements on relationship satisfaction and overall well-being.
AlcántaraCGiorgio CosenzoLMcCulloughE, et al. (2021) Cultural adaptations of psychological interventions for prevalent sleep disorders and sleep disturbances: A systematic review of randomized controlled trials in the United States. Sleep Medicine Reviews56: 101455.
2.
AndersenMLAlvarengaTFMazaro-CostaR, et al. (2011) The association of testosterone, sleep, and sexual function in men and women. Brain Research1416: 80–104.
3.
AndersenMLPoyaresDAlvesRS, et al. (2007) Sexsomnia: Abnormal sexual behavior during sleep. Brain Research Reviews56(2): 271–282.
4.
AndersenMLSchenckCHTufikS (2024) Understanding sexual parasomnias: A review of the current literature on their nature, diagnosis, impacts, and management. Sleep Medicine Clinics19(1): 21–41.
5.
AndersenMLTufikS (2015) Sleep and the modern society. Journal of Sleep Disorders & Therapy4(5): 1–2.
6.
AndersenMLTufikS (2022) The association between sleep disturbances and erectile dysfunction during the COVID-19 pandemic. Sexual Medicine Reviews10(2): 263–270.
7.
BaglioniCBattaglieseGFeigeB, et al. (2011) Insomnia as a predictor of depression: A meta-analytic evaluation of longitudinal epidemiological studies. Journal of Affective Disorders135(1–3): 10–19.
8.
BakkerJPWeaverTEParthasarathyS, et al. (2019) Adherence to CPAP: What should we Be aiming for, and how can we get there?Chest155(6): 1272–1287.
9.
BoivinDBBoudreauP (2014) Impacts of shift work on sleep and circadian rhythms. Pathologie Biologie62(5): 292–301.
10.
BortolliCLAndersenMLRibeiroMC, et al. (2019) The important role of sleep in female sexual function. Journal of Sexual Medicine16(9): 1484–1485.
11.
CelmerL (2023) Over a Third of Americans Opt for a “Sleep Divorce.”American Academy of Sleep Medicine (AASM).
12.
ChenJH (2017) Couples’ sleep and psychological distress: A dyadic perspective. Journals of Gerontology. Series B, Psychological Sciences and Social Sciences73(1): 30–39.
13.
DiamondLMHicksAMOtter-HendersonKD (2008) Every time you go away: Changes in affect, behavior, and physiology associated with travel-related separations from romantic partners. Journal of Personality and Social Psychology95(2): 385–403.
14.
DittamiJKeckeisMMachatschkeI, et al. (2007) Sex differences in the reactions to sleeping in pairs versus sleeping alone in humans. Sleep and Biological Rhythms5(4): 271–276.
15.
DoerrJMKlausKTroxelW, et al. (2022) The effect of intranasal oxytocin on the association between couple interaction and sleep: A placebo-controlled study. Psychosomatic Medicine84(6): 727–737.
16.
DrewsHJDrewsA (2021) Couple relationships are associated with increased REM sleep - A proof-of-concept analysis of a large dataset using ambulatory polysomnography. Frontiers in Psychiatry12: 641102.
17.
DrewsHJWallotSBryschP, et al. (2020) Bed-Sharing in couples is associated with increased and stabilized REM sleep and sleep-stage synchronization. Frontiers in Psychiatry11: 583.
18.
DrewsHJWallotSWeinholdSL, et al. (2017) Are We in sync with each other?" exploring the effects of cosleeping on heterosexual couples’ sleep using simultaneous polysomnography: A pilot study. Sleep Disorders2017: 8140672.
19.
DuerenALPerachRBanissyJFM, et al. (2022) Associations between tactile intimacy and sleep quality in healthy adults: A systematic review. Journal of Sleep Research31(3): e13504.
20.
FernandesGLTufikSAndersenML (2023) Emergence of different dimensions of sleepiness in a general population sample: An EPISONO study. Sleep Medicine112: 46–52.
21.
FuentesBKennedyKKillgoreW, et al. (2022) 0010 bed sharing versus sleeping alone associated with sleep health and mental health. Sleep45(Supplement_1): A4–A4.
22.
GrandnerMA (2022) Sleep, health, and society. Sleep Medicine Clinics17(2): 117–139.
23.
GrewenKMAndersonBJGirdlerSS, et al. (2003) Warm partner contact is related to lower cardiovascular reactivity. Behavioral Medicine29(3): 123–130.
24.
HachulHFrangeCBezerraAG, et al. (2015) The effect of menopause on objective sleep parameters: Data from an epidemiologic study in São Paulo, Brazil. Maturitas80(2): 170–178.
25.
HachulHPoleselDNTockL, et al. (2023) Sleep disorders in polycystic ovary syndrome: Influence of obesity and hyperandrogenism. Revista da Associacao Medica Brasileira65: 375–383.
26.
HombaliASeowEYuanQ, et al. (2019) Prevalence and correlates of sleep disorder symptoms in psychiatric disorders. Psychiatry Research279: 116–122.
27.
IrfanMSchenckCHHowellMJ (2021) NonREM disorders of arousal and related parasomnias: An updated review. Neurotherapeutics18(1): 124–139.
28.
IrwinMR (2015) Why sleep is important for health: A psychoneuroimmunology perspective. Annual Review of Psychology66: 143–172.
29.
JeonMDimitriouDHalsteadEJ (2021) A systematic review on cross-cultural comparative studies of sleep in young populations: The roles of cultural factors. International Journal of Environmental Research and Public Health18(4): 2005.
30.
KalmbachDAArnedtJTPillaiV, et al. (2015) The impact of sleep on female sexual response and behavior: A pilot study. Journal of Sexual Medicine12(5): 1221–1232.
31.
KaneHSSlatcherRBReynoldsBM, et al. (2014) Daily self-disclosure and sleep in couples. Health Psychology33(8): 813–822.
32.
KlingJMKapoorEMaraK, et al. (2021) Associations of sleep and female sexual function: good sleep quality matters. Menopause28(6): 619–625.
33.
KrygerMHSiegelI (2017) The power of sleep. Sleep Health3(5): 307–308.
34.
LastellaMO’MullanCPatersonJL, et al. (2019) Sex and sleep: Perceptions of sex as a sleep promoting behavior in the general adult population. Frontiers in Public Health7: 33.
35.
LuysterFSStrolloPJZeePC, et al. (2012) Sleep: A health imperative. Sleep35(6): 727–734.
36.
Orzeł-GryglewskaJ (2010) Consequences of sleep deprivation. International Journal of Occupational Medicine and Environmental Health23(1): 95–114.
37.
PalaginiLHertensteinERiemannD, et al. (2022) Sleep, insomnia and mental health. Journal of Sleep Research31(4): e13628.
38.
PortnovaGVProskurninaEVSokolovaSV, et al. (2020) Perceived pleasantness of gentle touch in healthy individuals is related to salivary oxytocin response and EEG markers of arousal. Experimental Brain Research238(10): 2257–2268.
39.
RajaratnamSMArendtJ (2001) Health in a 24-h society. Lancet358(9286): 999–1005.
40.
RichterKAdamSGeissL, et al. (2016) Two in a bed: The influence of couple sleeping and chronotypes on relationship and sleep. An overview. Chronobiology International33(10): 1464–1472.
41.
RobertsNABurlesonMHPituchK, et al. (2022) Affective experience and regulation via sleep, touch, and “sleep-touch” among couples. Affective Science3(2): 353–369.
42.
SchenckCHArnulfIMahowaldMW (2007) Sleep and sex: what can go wrong? A review of the literature on sleep related disorders and abnormal sexual behaviors and experiences. Sleep30(6): 683–702.
43.
SprajcerMO’MullanCReynoldsA, et al. (2022a) Sleeping together: understanding the association between relationship type, sexual activity, and sleep. Sleep Science15(Spec 1): 80–88.
44.
SprajcerMStewartDMillerD, et al. (2022b) Sleep and sexual satisfaction in couples with matched and mismatched chronotypes: A dyadic cross-sectional study. Chronobiology International39(9): 1249–1255.
45.
SweetmanAFarrellSWallaceDM, et al. (2023) The effect of cognitive behavioural therapy for insomnia in people with comorbid insomnia and sleep apnoea: A systematic review and meta-analysis. Journal of Sleep Research32(6): e13847.
46.
TempestaDSocciVDe GennaroL, et al. (2018) Sleep and emotional processing. Sleep Medicine Reviews40: 183–195.
47.
TroxelWM (2010) It’s more than sex: exploring the dyadic nature of sleep and implications for health. Psychosomatic Medicine72(6): 578–586.
48.
TroxelWMBuysseDJMatthewsKA, et al. (2010) Marital/cohabitation status and history in relation to sleep in midlife women. Sleep33(7): 973–981.
49.
TroxelWMRoblesTFHallM, et al. (2007) Marital quality and the marital bed: Examining the covariation between relationship quality and sleep. Sleep Medicine Reviews11(5): 389–404.
50.
Van PuyveldeMMairesseO (2022) Do C-tactile afferents go to sleep? A potential role for somatosensory stimulation in sleep regulation. Current Opinion in Behavioral Sciences43: 62–68.
51.
WaltersEMPhillipsAJKMellorA, et al. (2020) Sleep and wake are shared and transmitted between individuals with insomnia and their bed-sharing partners. Sleep43(1): zsz206. DOI: 10.1093/sleep/zsz206
52.
WangXXLinQLiuX, et al. (2025) The association between couple relationships and sleep: A systematic review and meta-analysis. Sleep Medicine Reviews79: 102018.
53.
WiebeSAJohnsonSM (2016) A review of the research in emotionally focused therapy for couples. Family Process55(3): 390–407.
54.
XieYFeeneyBC (2024) A narrative review of mechanisms linking romantic relationship experiences to sleep quality. Sleep Advances5(1): zpae049.
55.
YeLMalhotraAKayserK, et al. (2015) Spousal involvement and CPAP adherence: A dyadic perspective. Sleep Medicine Reviews19: 67–74.
56.
YorgasonJBGodfreyWBCallVRA, et al. (2018) Daily sleep predicting marital interactions as mediated through mood. Journals of Gerontology. Series B, Psychological Sciences and Social Sciences73(3): 421–431.
57.
YoshidaMIkedaAAdachiH (2024) Contributions of the light environment and co-sleeping to sleep consolidation into nighttime in early infants: A pilot study. Early Human Development189: 105923.
