Co-sleeping and infant sleep
Couples
A promising idea, with a smaller group behind it so far.
Sleep is crucial for maintaining mental health and brain metabolic function.
Who is behind it
Voices including an attachment coach and former licensed marriage and family therapist, a psychoanalyst and author of Being There and a mental health counselor and author.
How strong the research is
Mostly expert experience so far, with published research still catching up.
In their words
“Sleep is crucial for maintaining mental health and brain metabolic function.”
a Harvard Medical School psychiatrist specializing in metabolic psychiatry
Avoiding a pillow barrier between partners during sleep helps maintain nighttime touching and bonding.
Restorative sleep should be achieved without the use of substances such as alcohol, marijuana, sleeping pills, or melatonin to support brain and body health.
Prioritizing sleep by going to bed early and waking without an alarm supports brain energy and mental health.
Healthy mothers should co-sleep with their babies for at least the first three months because mothers regulate babies' stress levels and heartbeats, supporting neurological fragility.
No screens of any kind in the bedroom ever is the rule I wish I'd had with my kids and the first and most important rule parents should insist on.
Shifting your sleep schedule on weekends causes a form of self-inflicted jet lag that disrupts circadian rhythm and negatively impacts metabolism, hormones, and recovery.
Trying 30 days of going to bed and waking up at the same time can have a profound positive impact on sleep quality and overall feeling.
It is important to get help, make a safety plan, and decide to be on the same team to promote healing and safety after sleep-related violence.
Recognizing that the person who caused harm during sleep is not at fault and that both parties experienced the event together helps in emotional healing and maintaining the relationship.
Good restorative sleep should be achieved without substances like alcohol, marijuana, sleeping pills, or melatonin to maintain health.
Committing to turning off phones after work and aiming for 7 hours of sleep helps regulate brain function and reduce anxiety symptoms.
a mental health counselor and authorsponsoredSleep is foundational for mental and physical health, requiring a consistent nighttime routine to function at one's best.
With care
Some of the minds attach conditions. These are worth reading before you begin.
Sleeping face-to-face all night is a myth; instead, five minutes of spooning before sleep releases oxytocin and melatonin, improving sleep quality especially for women.
Getting a diagnosis and a treatment plan, including medication and sleep-oriented interventions, can help address sleep-related violent behaviors.
Getting a diagnosis and appropriate sleep-oriented interventions, including medication, can help manage sleep-related violent behaviors.
Many animals sleep with their newborns, but humans are told not to, despite this being natural.
Where they disagree
Both sides
For
Avoiding a pillow barrier between partners during sleep helps maintain nighttime touching and bonding.
an attachment coach and former licensed marriage and family therapistAgainst
Parents who are drug addicts or alcoholics should not co-sleep with their babies due to increased risks such as infant deaths.
a psychoanalyst and author of Being ThereMost of the minds come down in favour, and the dissent is worth knowing.
More on the other side
The Cry It Out method asks babies to adapt to adult convenience instead of adults adapting to babies’ needs and raises babies' cortisol levels beyond their ability to process stress, prioritizing parents' comfort over children's comfort. a psychoanalyst and author of Being There
The court system's 50/50 custody paradigm treats splitting custody like dividing a sandwich, ignoring the developmental needs of breastfed infants and primary attachment figures. a psychoanalyst and author of Being There
Disregulated sleep patterns are very unhealthy and make it impossible to have cognitive clarity, signaling serious mental health struggles. a mental health counselor and author
Going to bed late on Friday and Saturday nights and sleeping in disrupts your circadian rhythm repeatedly each week, leading to prolonged negative effects beyond just feeling tired on Sunday. a personal trainer and health coach
Talk it through
Entrain shows what the experts teach, so you can make better decisions with your own clinician. It does not diagnose or prescribe. If something is worrying you, start there.
How this reading was made
Every line here comes from a doctor, scientist or coach speaking publicly, and links to the moment they said it. Entrain listens for where independent experts arrive at the same place on their own, and shows where they part ways. Mostly expert experience so far, with published research still catching up.
Some statements come from sponsored segments or people speaking about their own products. They are marked where they appear and count for less. Last refreshed 23 September 2026.
Nearby ideas in mind
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- GratitudeThe experts agree
- Gratitude practiceThe experts agree
- JournalingThe experts agree
- MindsetThe experts agree
- Parasympathetic activationThe experts agree
- Self-compassionThe experts agree
- Slow breathingThe experts agree
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