Have you ever noticed how your partner’s bad mood can completely derail your day? Or how when your sister calls upset, suddenly your heart is racing even though nothing’s wrong in your life? Maybe you walk into the office and instantly feel tense because your coworker is stressed, or you leave a phone call with your mom feeling drained and anxious for hours afterward.
What’s happening isn’t a character flaw or a sign that you’re “too sensitive.” It’s called co-regulation, and it’s one of the most powerful forces in all your relationships. The problem? Most of us are doing it unconsciously, using patterns we learned as babies that no longer serve us.
Today, you’re going to learn exactly how co-regulation works in your brain and body, why your childhood experiences are still running the show in all your relationships, and most importantly, three practical skills you can use right now to stop the cycle of mutual dysregulation. By the end of this episode, you’ll understand why you can’t think your way out of emotional reactivity, and what to do instead.
11-minute read
What Is Co-Regulation (And Why Should You Care)?
Co-regulation is the process by which two people’s nervous systems influence each other. Think of it as an emotional dance where your stress levels, heart rate, and calm (or chaos) can literally sync up with the people around you, especially those you’re closest to.
When we talk about the nervous system, we’re primarily talking about the autonomic nervous system. Specifically, the sympathetic branch (your fight-or-flight response) and the parasympathetic branch (your rest-and-digest mode). These systems are constantly scanning for safety or danger, and here’s the kicker: they’re deeply influenced by the people around you.
The polyvagal theory, developed by Dr. Stephen Porges, explains how our vagus nerve (the longest nerve in the body that connects the brain to major organs) acts like a sophisticated social engagement system. Through this system, we’re constantly reading facial expressions, vocal tones, and body language to determine if we’re safe. When someone we trust is calm, our nervous system picks up on those cues and starts to calm down too. When they’re anxious? You guessed it. We get anxious.
It All Starts in Infancy
Babies don’t have the ability to regulate their own emotions. When an infant is distressed, their nervous system is essentially hijacked by stress hormones like cortisol. They can’t think their way out of it or use cognitive strategies. They need a caregiver to help them return to calm.
When a responsive caregiver/parent picks up a crying baby, makes eye contact, uses a soothing tone, and gently rocks them, something remarkable happens in the baby’s brain. The parent’s calm nervous system literally helps regulate the baby’s distressed one. The baby’s heart rate slows, cortisol levels drop, and their prefrontal cortex (the thinking part of the brain) comes back online. This isn’t just feel-good parenting; it’s neuroscience!
Through thousands of these interactions, babies learn what safety feels like in their bodies. They learn that distress is temporary and that connection brings relief. This process, called attunement, wires the developing brain for healthy emotional regulation later in life.
But What If Your Caregivers Weren’t Calm?
Here’s where things get tricky. Not everyone had caregivers who could effectively co-regulate. If your parents were anxious, overwhelmed, absent, or dismissive of your emotions, you learned different patterns.
Maybe you learned that expressing distress led to more chaos, so you shut down emotionally. Maybe you learned to become hyper-vigilant to others’ moods to keep the peace. Or perhaps you learned that the only way to get attention was to escalate your emotions. These adaptive strategies made perfect sense as a child, but they’re probably causing problems in your adult relationships.
The research on attachment styles shows us that our early co-regulation experiences create internal working models of relationships. These models influence how we interpret people’s behavior, how we manage conflict, and whether we move toward or away from connection when stressed.
Co-Regulation in Adult Relationships: The Good, The Bad, and The Dysregulated
In healthy adult relationships, co-regulation looks like mutual support. When one person is stressed, the other provides a calming presence. Not by fixing or dismissing, but by being regulated themselves. Their calm literally helps the other person’s nervous system settle.
This happens in romantic relationships, friendships, and family connections. Think about that friend who always makes you feel more grounded after you talk to them. Or a sibling whose steadiness helps you calm down when you’re spinning. That’s healthy co-regulation at work.
But co-regulation can also go sideways. Ever heard of emotional contagion? It’s when you absorb someone else’s emotions like a sponge. Your partner comes home stressed, and suddenly your heart is racing and you’re snapping at the dog. Your coworker is anxious about a deadline, and now you can’t focus on your own work. Your mom calls upset about something, and three hours later you’re still feeling that knot in your stomach. This isn’t co-regulation; this is dysregulation spreading like wildfire.
Or consider this common pattern: One person gets anxious and seeks reassurance. The other person, feeling overwhelmed by the emotional intensity, withdraws or gets defensive. Now both people’s nervous systems are in threat mode. The anxious person’s amygdala (the brain’s alarm system) starts firing even harder because withdrawal signals danger. The withdrawing person’s nervous system goes into shutdown mode to escape the overwhelm. Nobody’s regulating anybody. You’re just two dysregulated people making each other worse.
This pattern shows up everywhere. In romantic relationships when one partner’s stress triggers the other’s shutdown. In adult sibling relationships where old childhood dynamics replay. In friendships where one person’s chronic anxiety starts to drain the other. Even in adult relationships with aging parents, where their fear or anger can hijack your own nervous system if you’re not careful.
The Neuroscience of Why This Matters
Your brain has something called mirror neurons. These are specialized cells that fire both when you perform an action and when you observe someone else performing that action. These neurons are part of why you yawn when someone else yawns, but they also play a huge role in emotional resonance. When you see someone’s face contort in anger or collapse in sadness, your mirror neurons are activating similar emotional circuitry in your own brain.
Additionally, when you’re in a chronic state of dysregulation with people in your life (whether that’s your partner, a difficult family member, or a stressful coworker), your body is constantly producing stress hormones like cortisol and adrenaline. Over time, this doesn’t just feel bad. It creates physical health problems including cardiovascular disease, weakened immune function, and disrupted sleep.
The stakes are high.
On the flip side, positive co-regulation releases oxytocin (often called the bonding hormone), which reduces stress, increases feelings of trust, and promotes physical healing. When you successfully co-regulate with people you care about, you’re not just feeling better emotionally; you’re literally changing your biochemistry in ways that strengthen your bond and improve your health.
The free download for today is something I’m calling The Co-Regulation Quick Start Guide: 5 Tools to Calm Your Nervous System in Any Relationship. If you’re listening today and thinking you need more, then definitely download it. I also have a Therapy-to-Go Bundle for this episode which I’ll tell you about at the end. For now, let’s talk about the three core skills you need for healthy co-regulation.
The Three Core Skills of Healthy Co-Regulation
So how do you break dysfunctional co-regulation patterns and build healthier ones? It comes down to three essential skills:
Skill #1: Self-Regulation First
Here’s the truth that nobody wants to hear: you can’t co-regulate someone else if you’re dysregulated yourself! It’s like trying to be a lifeboat when you’re underwater. Before you can help anyone else settle, you need to get your own nervous system into a regulated state.
Practical steps:
- Notice your body’s signals. Is your jaw clenched? Shoulders tight? Breath shallow? These are signs your sympathetic nervous system is activated. You can’t think your way out of this. You need to work with your body.
- Use physiological regulation techniques. Research shows that extending your exhale (breathing out longer than you breathe in) activates your vagus nerve and signals safety to your nervous system. Try box breathing: inhale for 4 counts, hold for 4, exhale for 6, hold for 2.
- Create a pause. When you feel yourself getting activated (whether it’s with your partner, a family member, a friend, or even a coworker), it’s okay to say, “I need a minute to calm down so I can be present with you.” This isn’t abandonment; it’s responsible self-care that ultimately serves the relationship. To get good a creating that pause button, you’re going to need to work on your mindfulness! If you haven’t downloaded my free Mindfulness Starter Kit yet, this is your signal.
- I’m going to HIGHLY recommend that you start some kind of morning practice to get yourself regulated first thing and then set intention throughout the day.
Skill #2: Differentiate Between Connection and Enmeshment
Many people confuse emotional enmeshment with intimacy. Enmeshment is when you can’t tell where your feelings end and the other person’s begin. You absorb their stress, take responsibility for their emotions, and lose your own center in the process. Hello codependency or fawning.
True co-regulation requires what family therapist Murray Bowen called differentiation. The ability to stay emotionally connected to someone while maintaining your own sense of self. This means you can be empathetic without becoming overwhelmed by their emotions.
Practical steps:
- Practice “compassionate witnessing.” Instead of trying to fix the other person’s bad mood or taking it personally, practice simply being present. You might say, “I can see you’re really stressed right now. I’m here.” Notice how different this feels from “Why are you in such a bad mood?” or “Let me fix this for you.”
- Use “I” statements to maintain boundaries. When someone’s stress is affecting you (whether it’s your partner, parent, sibling, or friend), name it: “I notice I’m starting to feel anxious when you talk about this. I want to support you, and I also need to take care of my own nervous system.”
- Remember: their emotions are information, not instructions. Someone else’s stress doesn’t mean you need to jump into action or become stressed yourself. Sometimes the most regulating thing you can do is stay calm and grounded.
Skill #3: Create Intentional Co-Regulation Practices
The best time to practice co-regulation isn’t during a crisis. It’s when things are relatively calm. Building a foundation of positive co-regulation makes it easier to navigate difficult moments together.
Practical steps:
- Synchronize your breathing. With a romantic partner especially, physical proximity and synchronized breathing can literally sync your heart rates. Try sitting together, placing a hand on each other’s chest or back, and matching your breathing rhythm. Research shows this creates physiological coherence between people.
- Use “co-regulation check-ins.” Ask the person, “What does your nervous system need right now?” This question invites them to tune into their body rather than staying stuck in their head. They might need movement, touch, silence, or conversation, but they need to identify it, not have you guess.
- Build a “calm-down toolkit” together. When you’re both regulated (whether with your partner, a close friend, or an adult child), brainstorm specific things that help each of you return to calm: certain music, going for a walk, specific types of touch, time alone. Having a pre-agreed plan reduces the cognitive load when you’re stressed.
When Co-Regulation Isn’t Enough
Sometimes, despite your best efforts, co-regulation feels impossible. This often happens when one or both people have significant trauma histories or are dealing with mental health conditions like anxiety disorders or depression. If you find that you’re constantly dysregulated together or that someone’s nervous system is perpetually in threat mode, it may be time to seek professional help.
Therapies like EMDR (Eye Movement Desensitization and Reprocessing), somatic experiencing, or emotionally focused therapy specifically address nervous system dysregulation and can help rewire those early attachment patterns. There’s no shame in getting support. In fact, it’s one of the most loving things you can do for yourself and your relationships.
The Bottom Line
Co-regulation isn’t about fixing each other or taking responsibility for each other’s emotions. It’s about recognizing that we’re wired for connection and that our nervous systems are constantly influencing each other. When you understand this, you can stop the unconscious patterns that create distance and dysregulation, and instead build intentional practices that foster calm, safety, and connection.
The beautiful thing about co-regulation is that it’s never too late to learn. Even if your early experiences didn’t teach you healthy patterns, your nervous system is plastic. Meaning it can change. Through awareness, practice, and patience (lots of patience), you can create the regulated, connected relationships you deserve.
And here’s what I want you to remember: You don’t have to be perfectly calm to co-regulate. You just need to be slightly more regulated than the other person in that moment. And next time, maybe they’ll be the calm one for you. That’s what healthy relationships look like. Taking turns being each other’s safe harbor.
Therapy-to-Go Bundle:
- The Co-Regulation Quick Start Guide: 5 Tools to Calm Your Nervous System in Any Relationship
- Attachment History Workbook
- Co-Regulation Journal: 30 Days of Prompts to Transform Your Relationships
- Co-Regulation Practice Guide with 5 Exercises
- Nervous System Reset Worksheet
- Guided Visualization: Creating Your Internal Safe Space
Buy the bundle now for $10 and get all the above. OR join Abby’s One Love Collective for only $8/month, and get a Therapy-to-Go Bundle for each episode, plus ad-free episodes of the podcast, live Q&A’s with Dr. Abby, and access to an amazing community that’s all about real growth.
Resources for What Is Co-Regulation? How Your Nervous System Affects Every Relationship You Have
Join Abby’s One Love Collective on Substack
How Your Attachment Style Affects Your Personal Relationships
Emotional Healing Techniques: Mastering Mindfulness and Self-Acceptance/Compassion
Abby’s Step-by-Step Guide to Starting Your Day Right
How to Set Intentions in Just 18 Seconds (aka The 18-Second Shift)
Codependency, Counter-Dependency and Narcissism, Oh My!
Your People-Pleasing Might Be a Trauma Response
You Might Not Realize You’re Suffering from Unhealed Trauma
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