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Play, brain & big feelings

Play is how children learn, heal and grow, and your calm is the safest place for them to start.

⏱ 6 min read📑 8 sections📚 21 sources✅ Reviewed October 2026

By the numbers

Brains, play and play therapy in a few numbers.

Brain & feelings

1 million+new connections between brain cells form every second in the first few years of life.
Mid-20sis when the brain’s planning and self-control area (the prefrontal cortex) finishes maturing.
Ages 1–3are when tantrums are most common. They usually get better after age 3.
79%of U.S. children ages 6 months to 5 years showed all four signs of flourishing, like being curious, affectionate and bouncing back (CDC, 2023–2024).

Play

2×In one study the AAP describes, 3- and 4-year-olds who played for 15 minutes were twice as relieved of their worry about starting preschool as children who listened to a story.
~30%of U.S. kindergarten children no longer have recess, the AAP estimates.
93studies were pooled in a large review that found play therapy helped children, for boys and girls, at different ages and for different problems.

How kids’ brains and feelings grow

Why children need us to help them calm down, and why tantrums happen.

A child’s brain is built over time, from the bottom up. Simple connections form first, and more complex skills are built on top. In the first few years of life, more than 1 million new connections between brain cells form every second.

Back-and-forth moments with caring adults help build those connections. When a baby babbles, points or cries and you answer with eye contact, words or a hug, it is like a gentle game of tennis. Experts call it “serve and return”.

Serve and return in everyday life

  • Your baby looks at the dog. You say: “Yes, that’s a dog! A fluffy dog.”
  • Your toddler hands you a block. You smile, take it, and hand it back.
  • Your child frowns at a puzzle. You say: “That piece is tricky, huh?”
  • Naming what a child sees, does or feels builds language, even before they can talk.

The part of the brain that handles planning, decisions and self-control (the prefrontal cortex) is one of the last parts to finish growing. It keeps maturing until the mid-to-late 20s. That is why children, and even teens, can’t always manage big feelings on their own yet.

Children learn to calm themselves by first being calmed by someone else. This is called co-regulation: a caring adult stays steady, reads what the child needs, and helps them settle. Over time and many repeats, the child learns to do it alone (self-regulation).

Co-regulation in 4 steps

  1. Pause and calm yourself first. Take one slow breath.
  2. Name and accept their feeling: “I can tell how frustrated you are.”
  3. Watch how they respond.
  4. Choose how to help: a gentle hand on the shoulder, a drink of water, a break, or moving their body.

Tantrums are a normal part of development. They are most common between ages 1 and 3 and usually get better after 3. They often happen when a child has a need or feeling they can’t yet put into words.

Helping with tantrums

  • Prevent the predictable ones: snacks for hunger, protect naps and sleep.
  • Give lots of attention and specific praise for good moments.
  • Offer choices within limits.
  • Stay as calm as you can. Redirect with a new room, a toy or a silly song.
  • Step in right away if your child is in danger, or is hitting, kicking, biting or throwing.
  • If you feel your own temper rising, hand over to another adult for a moment.

Feeling words are a superpower. When children can say “I’m angry” or “I’m nervous”, they are less likely to show it with their fists or a meltdown. Use simple, clear words like angry, sad, scared, excited, lonely and proud.

A child who “can’t calm down” is not being bad on purpose. Their brain is still learning. Your calm is the teacher.

Why play matters for the brain

Play is how children learn, connect and handle stress. Tap any card.

Play is more than fun. The American Academy of Pediatrics calls play “brain building” and says it is central to healthy development. It helps children grow social, emotional, language and thinking skills.

Play also helps protect children from the harm of stress, and it builds the bond between parent and child. The AAP even encourages doctors to write a “prescription for play” at check-ups in a child’s first two years.

🧩 Thinking skillsProblem-solving, memory, focus and understanding cause and effect.
Read more

Play is a key to “executive function”: the skills that let us plan, focus, remember instructions, and handle more than one thing at a time. These skills are the foundation for learning at school and in life.

How play builds it

  • Blocks and puzzles: spotting a problem, trying a fix, trying again
  • Stacking cups, shape sorters and pull toys: “When I do this, that happens”
  • Games with rules: remembering, waiting and planning ahead
  • Make-believe: holding a story in mind and changing it
Resist the urge to solve the puzzle for them. A little struggle, with you nearby, is where the learning happens.
💛 Feelings & empathyPretend play helps children understand their own feelings and other people’s.
Read more

When a child pretends to be a doctor, a parent or a grumpy dragon, they practice seeing the world through someone else’s eyes. Dolls, stuffed animals and make-believe let children try out big feelings in a safe way.

What it builds

  • Calming down and self-control
  • Understanding how others feel (empathy)
  • Working through scary or confusing experiences
  • Bouncing back: rebuilding a fallen tower teaches “I can try again”
If your child plays out a hard event, like a hospital visit or a family change, it is often their way of making sense of it.
💬 Language & talkingTelling stories with toys grows vocabulary, and playing with others teaches turn-taking.
Read more

Play is full of talking: narrating a story, giving toys voices, asking “what happens next?” Back-and-forth talk with a caring adult builds the brain’s language connections.

What it builds

  • New words and longer sentences
  • Listening and taking turns in conversation
  • Reading body language and facial expressions
  • Following and giving instructions (think “Simon Says”)
Describe what your child is doing as they play, like a friendly sports commentator. It builds words without any pressure.
🤸 Body & sensesClimbing, building, drawing and squishing build strength, coordination and senses.
Read more

Moving and touching are how young children explore the world. Physical and hands-on play builds both the body and the brain’s ability to make sense of what it feels, sees and hears.

What it builds

  • Fine motor skills: blocks, small figures, crayons, clay and crafts strengthen hands and hand-eye coordination
  • Gross motor skills: balls, ride-on toys, climbing and running build balance and strength
  • Sensory skills: different textures, shapes, sounds and colors
  • Physical confidence from outdoor play

Active play is good for feelings too. Regular active play and exercise can help with stress, anxiety, low mood and anger.

🌟 Confidence & calmMastering a game or a puzzle says “I can do hard things”. Play eases stress too.
Read more

Play acts as a buffer against the harm of stress. In one study the AAP describes, 3- and 4-year-olds who played for 15 minutes were twice as relieved of their anxiety about starting preschool as children who listened to a story.

What it builds

  • A sense of achievement and self-esteem
  • A “growth mindset”: effort helps me get better
  • Feeling safe: favorite toys and comfort objects help children feel secure
  • A happy, calmer body after joyful play

Screens can crowd out real play. Real, back-and-forth play with people is better for young children’s learning than digital media.

Looking for ideas? The “Family time & routines” guide has play activities and parent-child activities you can try today.

Play ideas by age

Simple, low-cost play from birth to school age. Tap any card.

Research shows play can improve children’s abilities to plan, organize, get along with others and manage emotions. It also helps with language, math and social skills, and helps children cope with stress.

You don’t need fancy toys. Simple, inexpensive things are some of the best tools for creativity and learning. Your presence and attention matter more than any electronic gadget.

👶 Birth to 6 monthsSmiles, coos and back-and-forth “conversations”.
Read more

At this age, play is mostly about connection. Copying your baby’s sounds and answering their smiles builds the base for language and social skills.

Try

  • Change your baby’s position so they see the world from new angles, including supervised tummy time
  • Copy their coos and babbles, then pause for their “reply”
  • Show colorful objects and let them explore safe textures
  • Smile back when your baby smiles
Every “serve” you return, a look, a word or a smile, helps build your baby’s brain.
🙈 7 to 12 monthsPeek-a-boo, safe exploring and cause and effect.
Read more

Babies this age love to explore and discover that their actions make things happen.

Try

  • Chase bubbles or play on the grass outdoors
  • Let them see their faces in a mirror
  • Make a safe space to crawl and explore
  • Place a few toys within reach so they can pull them out
  • Play peek-a-boo, or hide a toy under a blanket for them to find
🧱 1 to 3 yearsBlocks, make-believe, songs and moving bodies.
Read more

Toddlers learn through doing. Unstructured play, where children lead, lets them follow their own curiosity.

Try

  • Blocks, empty containers, wooden spoons, shape sorters and puzzles
  • Read together, then act out the story and ask “what happens next?”
  • Simple pretend play, like sipping from an empty cup
  • Sing songs and move to the beat; try Simon Says
  • Supervised playdates with other toddlers
  • Walking, jumping and standing on one leg
When choosing child care or preschool, ask how much free, child-led playtime there is.
🎨 4 to 6 yearsDress-up, drawing, dancing and playing with friends.
Read more

Pretend play gets richer at this age. A little boredom is OK: it can spark creativity.

Try

  • Dress-up clothes and props for imaginary scenes
  • Hopping, swinging, climbing and somersaults
  • “Playing house” while helping with real chores
  • Regular time with friends to practice sharing and taking turns
  • Singing, dancing and drawing
  • Telling stories and asking what they remember
⚽ School age & upOutdoor play, games, sports and free time.
Read more

Play still matters as children grow. Outdoor play builds balance, spatial awareness and attention, and recess gives children a needed break from structured lessons.

Try

  • Board games and games with rules
  • Free time outdoors, with friends when possible
  • Hobbies they choose themselves
  • Watching or playing age-appropriate media together, rather than alone
A family media plan, like no screens at dinner or in bedrooms, helps keep room for real-world play.

Play time has declined for decades, because of packed schedules, fewer safe places to play and more media use. Protecting some free, unhurried playtime is a real gift.

How play helps with big feelings

Anger, worry and sadness: how play helps children feel calmer. Tap any card.

Emotional dysregulation means having a hard time managing strong feelings like anger, worry or sadness. It is common in young children because the brain’s “calm-down” systems are still growing. It can look like outbursts, hitting, tantrums, or going quiet and pulling away.

Play gives children a safe way to feel, show and practice handling those feelings, with a trusted adult beside them. When a child feels safe, seen and supported, they can borrow your calm until they learn their own.

🎭 A safe outletToys let children act out fears and frustrations from a safe distance.
Read more

It can be too hard for a child to say “I’m scared about Grandpa being sick.” But a teddy bear can be scared. Dolls, action figures and make-believe give feelings a little distance, which makes them easier to show.

What you might see

  • Toy animals fighting, hiding or getting lost
  • Playing “hospital”, “school” or “moving house” again and again
  • Stories where a character is sad, angry or left out

You can gently comment on what you see, like “There are a lot of fights going on.” This can open a conversation without pressure.

🏷️ Words for feelingsNaming feelings during play builds an emotional vocabulary.
Read more

Playtime is a perfect moment to name emotions. When children learn to describe what they feel, they can say it instead of acting it out, which can mean fewer meltdowns and better communication.

Try saying

  • “It looks like your bear is feeling angry. What happened?”
  • “That tower falling seemed frustrating.”
  • “You look proud of that drawing!”
  • “Is Bunny feeling lonely over there?”
Reflect the feeling, not just the action. “You’re building fast” becomes “You’re so excited about this!”
🌬️ Practicing calmCalming down with a toy teaches skills children can use for real.
Read more

You can model calming tools inside the game. Children copy what they see and, over time, use those tools on their own.

Try saying

  • “Let’s help Teddy take a big, slow breath.”
  • “Dino is so mad! Let’s count to 10 with him.”
  • “Bunny needs a hug and a quiet spot to feel better.”

Practicing in calm moments makes the skill easier to reach in a hard moment. Over time, these little rituals help the body settle faster.

🧭 Rehearsing choicesPlay lets children try out what to do when things go wrong.
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Play is a rehearsal space for real life. What happens when a toy feels left out, or two characters get angry? Children can try different endings without real-world consequences.

Try asking

  • “What could Dino do instead of yelling?”
  • “How could the bunnies share the swing?”
  • “What would help the little car feel brave?”
Guide gently and keep it light. If it starts to feel like a lecture, the play (and the learning) stops.
🤗 Connection & co-regulationCloseness, eye contact and a gentle voice help a child’s body settle.
Read more

When children feel close to a caring adult, their bodies calm through trust and safety. Joyful, shared play helps regulate the body’s stress response and builds the bond between you.

What helps

  • Getting down to their level
  • Warm eye contact and a soft voice
  • Physical closeness, if your child likes it
  • Coming back to play together, day after day
Regular, warm time together builds the trust that helps children cope with hard things.

5 tips for meaningful playtime

  1. Let your child lead. They choose the game, toy or story. It tells them their ideas matter.
  2. Reflect feelings, not just actions: “You look proud of that drawing.”
  3. Use clear, simple feeling words like angry, nervous, excited or lonely.
  4. Hold space, don’t take over. Let play get messy or emotional. Be present and curious instead of fixing or teaching.
  5. Make it a daily ritual: about 15–20 minutes of device-free play, like brushing teeth or bedtime.

What is play therapy?

Therapy that uses play as a child’s language. Tap any card.

Young children often don’t have the words for big feelings. Play is their natural language. Play therapy is a kind of talk therapy for children that uses toys, art and games instead of only words.

In a safe playroom with a trained therapist, a child can act out what they feel and what has happened to them. The therapist watches the themes in the play to understand the child’s inner world, and gently helps them work through it.

🏠 What happens in a sessionA playroom full of carefully chosen toys, art and games.
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The child is free to explore the playroom. The therapist acts as a guide, offering tools that help the child tell their story. Some approaches let the child lead (often called child-centered play therapy). Others are more structured, with the therapist giving more direction.

Things you might find in a playroom

  • Dollhouses, dolls and puppets
  • Sand trays with small figures
  • Art supplies and clay
  • Stuffed animals and building toys
  • Costumes, board games, books and music
It may look like “just playing”. That is the point: play is how children work things out.
🎯 What it can help withWorry, sadness, behavior problems, relationship struggles and hard experiences.
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Play therapy is used for emotional and behavioral difficulties, and to help children heal after stressful or frightening experiences, such as parents separating or a move between homes. It is most often used with children ages about 3 to 12.

It is used for

  • Anxiety and worry
  • Sadness and low mood
  • Anger and behavior problems
  • Trouble with relationships
  • Coping after a loss, a change, or a frightening event

A large review of 93 studies found that play therapy helped children, and it worked equally well for boys and girls, at different ages, and for different problems.

🌱 What it buildsFeelings skills, communication, problem-solving and social skills.
Read more

Children can learn to…

  • Express feelings in healthy ways, with and without words
  • Put their thoughts and feelings into words over time
  • Solve problems and think more flexibly through make-believe
  • Cooperate, share, take turns and understand others

Because it follows a child’s natural way of learning, play therapy can feel less scary than sitting and talking.

👨‍👩‍👧 Parents are part of itThe biggest gains came when parents were involved.
Read more

In the large review of play therapy studies, involving parents led to the biggest improvements. Some approaches, sometimes called filial therapy, teach parents special ways to play with their own child at home.

How you might be involved

  • Sharing your child’s history and what you have noticed
  • Regular check-ins with the therapist
  • Learning play skills to use at home
  • Practicing new routines between sessions
Ask the therapist: “How will I be involved, and what can I do at home?”
🔍 How to find a play therapistStart with your child’s doctor or school counselor.
Read more

Steps to take

  1. Talk with your child’s doctor about what you have noticed.
  2. Ask for a referral to a mental health professional who works with children.
  3. Ask your child’s school counselor for local options.
  4. Look for a licensed counselor, psychologist or social worker with special training in play therapy (in the U.S., some are “Registered Play Therapists”).
  5. Check what your health insurance covers.

Good questions to ask

  • Is your approach backed by research?
  • How will parents be involved?
  • How will we know if it is helping?
  • About how long might it take?

How community helps

Safe places to play, and support for the grown-ups too. Tap any card.

Responsive, playful care is easier when caregivers are supported. Harvard’s Center on the Developing Child names money strain, limited social connections and chronic health problems among the things that can get in the way, and says policies and programs that support caregivers are vital.

🛝 Safe places to playPlaygrounds, parks and open spaces.
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Fewer safe places to play is one reason children play less than they used to. The AAP encourages families to speak up for safe playgrounds in their community.

Ways to help

  • Ask your local council or parks team about playground upkeep
  • Join or start a park clean-up day
  • Share safe, free play spots with other families
🏫 Recess & playful learningPlay belongs at school too.
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The AAP estimates about 30% of U.S. kindergarten children no longer have recess. It encourages families to ask schools to offer recess and playful learning alongside structured lessons.

Ways to help

  • Ask your child’s school how much recess there is
  • Support parent groups that speak up for play
🧒 Playdates & groupsOther children are some of the best teachers.
Read more

Playing with peers helps children practice sharing, taking turns and cooperating. The AAP suggests supervised playdates for toddlers and regular time with friends for preschoolers.

Places to find other families

  • Child care or preschool
  • Faith and cultural communities
  • Library story times and play groups
  • Neighbors and local parent groups
🫂 Support for caregiversParents play best when they are not running on empty.
Read more

Stress, money worries and isolation make it harder for any adult to slow down and play. Getting support for yourself is part of supporting your child’s play.

Places to start

  • 211 (U.S.) for local help with food, housing, bills and caregiver resources
  • A friend or relative who can share playtime
  • Parent groups at school, a library or faith community
The “Parent guilt & your wellbeing” and “Parent burnout” guides have more on looking after yourself.

When and where to get help

When play and patience may not be enough, and who to call.

Big feelings and tantrums are a normal part of growing up. Consider getting help if a feeling or behavior lasts for weeks or longer, causes your child distress, or gets in the way of school, home or friendships.

It may be time to talk to a professional if…

  • Big feelings seem much stronger or more frequent than in other children their age
  • Hitting, biting or throwing keeps happening, or someone is getting hurt
  • Play keeps returning to the same scary or upsetting theme for a long time
  • Your child has been through a frightening event, a loss or a big family change
  • You feel stuck, or your own stress is running very high

Where to start

  1. Write down what you’ve noticed, when it started and how often it happens.
  2. Talk with teachers or daycare staff about what they see.
  3. Talk with your child’s doctor and share your notes.
  4. Ask for a referral to a mental health professional who works with young children, such as someone trained in play therapy.
  5. Ask how you, as a parent, will be involved.

Where to reach out (free)

  • 211 (U.S.): call 211 for local help with food, housing, bills, caregiver resources and mental health support
  • 988 Suicide & Crisis Lifeline (U.S.): call or text 988, or chat at 988lifeline.org, 24/7
  • Crisis Text Line (U.S.): text HOME to 741741, 24/7
  • Emergency: call 911 if a life is in danger
  • Outside the U.S.: findahelpline.com lists free helplines in many countries
Worried about early warning signs? The “Kids: early signs & support” guide goes into more detail.
This guide is for learning only. It is not a diagnosis and does not replace care from your child’s doctor or a mental health professional.

📝 Worksheets for this guide

Fill these in privately in the app. Your answers stay on your phone.

Our daily connection time planAbout 15–20 minutes of device-free time together each day can build trust and help with big feelings. Plan yours here.
Big feelings play notesChildren often show feelings through play first. Jot down what you notice so you can spot themes and talk about them gently.
Our calm-down planPracticing calm in easy moments makes it easier to reach in hard ones. Plan the steps you and your child will use together.
🔒 Fill in privately in the Mentally United Wellness App. Free, no ads, no accounts.

Sources

  1. Centers for Disease Control and Prevention (CDC) (2026). Data and Statistics on Children’s Mental Health
  2. National Institute of Mental Health (NIMH) (2024). Children and Mental Health: Is This Just a Stage?
  3. National Institute of Mental Health (NIMH) (2023). The Teen Brain: 7 Things to Know
  4. Center on the Developing Child, Harvard University. Brain Architecture
  5. Center on the Developing Child, Harvard University. Serve and Return
  6. Harvard Health Publishing (Harvard Medical School) (2024). Co-regulation: Helping children and teens navigate big emotions
  7. American Academy of Pediatrics (AAP), HealthyChildren.org (2018). Want Creative, Curious, Healthier Children With 21st Century Skills? Let Them Play (on the AAP clinical report “The Power of Play”)
  8. American Academy of Pediatrics (AAP), HealthyChildren.org (2021). Top Tips for Surviving Tantrums
  9. Cureus (peer-reviewed), via PubMed Central (NIH) (2023). Play Therapy As Effective Options for School-Age Children With Emotional and Behavioral Problems: A Case Series (Gupta et al., Cureus)
  10. Professional Psychology: Research and Practice (American Psychological Association) (2005). The efficacy of play therapy with children: A meta-analytic review of treatment outcomes (Bratton, Ray, Rhine & Jones)
  11. NHS (UK National Health Service). Talking to your child about feelings
  12. NHS (UK National Health Service). Helping your child with anger issues
  13. American Academy of Pediatrics (AAP), HealthyChildren.org (2023). The Power of Play: How Fun and Games Help Children Thrive (Michael Yogman, MD, FAAP)
  14. 988 Suicide & Crisis Lifeline. 988 Suicide & Crisis Lifeline
  15. National Institute of Mental Health (NIMH). Help for Mental Illnesses
  16. Crisis Text Line. Crisis Text Line
  17. Substance Abuse and Mental Health Services Administration (SAMHSA). Crisis Text Line (resource listing)
  18. 211 (United Way Worldwide). 211: Get help with food, housing, bills and more
  19. California Department of Social Services. Environmental Wellness (211 information and referral)
  20. Find A Helpline (ThroughLine). Find A Helpline
  21. International Association for Suicide Prevention (IASP). Crisis Centres & Helplines

This guide is for education and self-care. It is not a diagnosis or a substitute for professional care. Please talk to a counselor or clinical provider about your health. Reviewed October 2026.

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