The Basics Matter: How Food, Sleep and Exercise Support Children’s Mental Health

When a child is struggling with anxiety, low mood, stress or emotional outbursts, it is natural for parents to look for answers. Perhaps they need help managing their worries, understanding their feelings, changing unhelpful thought patterns or developing better coping strategies. Perhaps school has become overwhelming, friendships are difficult, or family life feels increasingly tense.

As a clinical child and adolescent psychologist, one of the very first things I look at when working with children and young people experiencing emotional difficulties is something that can seem almost disappointingly simple: food, sleep and exercise.

I know. It doesn't sound particularly exciting. Parents (and teens) may be hoping for a psychological explanation or a practical strategy they can use when their child is anxious or upset.

And of course, those things matter.

But before we look at more complex interventions, it is worth checking whether the foundations are in place.

Because as unglamorous as these basics may seem, common sense and scientific research both tell us that they matter.

What does breakfast have to do with stress?

A recent study from Binghamton University, published in the Journal of American College Health, explored the relationship between dietary habits, lifestyle and resilience. The researchers collected survey responses from approximately 400 college students and examined how their habits related to their ability to cope with stress.

The findings suggested that students who regularly ate breakfast, exercised and got adequate sleep tended to report greater psychological flexibility and resilience. In contrast, insufficient sleep and less healthy dietary habits were associated with greater difficulty adapting to stressful situations.

The study also explored the relationship between fish oil supplementation and psychological flexibility, although this is not a reason to assume that children need supplements to manage stress.

An important point is that the researchers found associations, rather than proving that these habits directly caused better resilience. The participants were also college students, so we should be cautious about applying the findings directly to younger children.

Nevertheless, the study adds to an important conversation about the relationship between everyday habits and mental health.

1. Food: fuel for the body and brain

Think about how difficult it can be to concentrate, remain patient or think clearly when you are hungry. Children are no different. In fact, depending on their age and developmental stage, they may be much less able to recognise hunger or explain how it is affecting them.

A child who has skipped breakfast, eaten very little at lunchtime or gone several hours without food may find it harder to concentrate, tolerate frustration or manage demanding situations. Hunger can also feel surprisingly similar to anxiety for some children: a racing heart, shakiness, irritability or a general sense of feeling uncomfortable.

This does not mean that every anxious or irritable child simply needs a snack. Anxiety and low mood have many possible causes, and food is not a cure for either. However, regular, adequate and varied nutrition gives the body and brain the resources they need to function.

For parents, it can be helpful to consider a few practical questions:

• Does my child eat something in the morning before school?

• Are they eating enough throughout the day, particularly during busy school days?

• Do they regularly come home ravenous because they have eaten very little at school?

• Are they drinking enough water?

• Is there a predictable routine around meals and snacks?

For international families, there may be additional considerations. Children who are adjusting to a new school, a different food culture or unfamiliar school lunches may eat less than their parents realise. A child who is anxious about using a school canteen or who dislikes the food available may need practical support rather than another conversation about healthy eating.

The goal is not a perfect diet. It is to make sure that a child's basic nutritional needs are being met consistently, without turning meals into another source of pressure or conflict.

2. Sleep: emotions are harder to manage when we are tired

Sleep is another area that can have a significant impact on how children feel and behave.

When children do not get enough sleep, they may become more irritable, emotionally reactive, worried or easily overwhelmed. Concentration and memory can suffer, and everyday problems may feel much bigger than they would after a good night's rest.

A child who is already anxious may also find it harder to switch off at bedtime. Worries about school, friendships or the following day can keep them awake, while insufficient sleep can make those worries more difficult to manage the next day.

This can create a cycle: anxiety interferes with sleep, poor sleep makes coping harder, and the resulting difficulties increase anxiety.

Children's sleep needs vary with age, but many school-aged children need around 9–12 hours per night, while teenagers generally need around 8–10 hours. Individual needs differ, and the quality and regularity of sleep matter too.

Rather than immediately assuming that a child has a sleep disorder, I often start by looking at the everyday routine.

• Is bedtime reasonably consistent?

• Does the child have enough time to wind down before bed?

• Are screens, stimulating activities or homework keeping them awake?

• Is the bedroom comfortable and conducive to sleep?

• Are worries or fears making it difficult to fall asleep or stay asleep?

• Is the child regularly exhausted during the day despite having enough time in bed?

For some families, small changes can make a meaningful difference. A predictable bedtime routine, a little time to talk through worries before bed, and a calmer transition away from screens may help.

Of course, not every sleep difficulty can be solved by establishing a routine. Persistent insomnia, significant daytime sleepiness, snoring or other ongoing concerns may need further assessment.

The important thing is not to overlook sleep when trying to understand a child's emotional difficulties.

3. Exercise: helping the body regulate stress

Physical activity is not just about fitness, sport or burning off excess energy. It also provides opportunities to regulate emotions, release tension, experience enjoyment and take a break from persistent worries.

The Binghamton University study found that physical activity lasting at least 20 minutes was associated with greater psychological flexibility. Again, this does not establish cause and effect, but it supports the value of looking at activity as part of the bigger picture of mental well-being.

For children, exercise does not have to mean joining a competitive sports team or completing a structured workout. It can mean cycling to school, playing football with friends, dancing in the living room, swimming, climbing, walking the dog or simply spending time outside.

This is particularly relevant for children who spend much of their day sitting in a classroom and then come home to homework, gaming or other screen-based activities.

Physical activity can create a useful change of pace. It gives children a chance to move their bodies, shift their attention and engage with the world beyond their worries.

Enjoyable movement can also provide a sense of competence and connection, particularly when it takes place with friends or family.

For a child experiencing anxiety, however, it is important not to turn exercise into another demand they feel they are failing to meet. A child who is socially anxious may find team sports intimidating. A child who struggles with coordination or sensory sensitivities may dislike particular activities. A child experiencing depression may have very little motivation to get started.

In these situations, we can begin with small, achievable steps. A ten-minute walk together, kicking a ball in the garden or choosing music to dance to may be a more realistic starting point than signing up for a new sport.

The aim is to find enjoyable, manageable ways to incorporate movement into everyday life.

4. The connection: psychological flexibility

One of the particularly interesting aspects of the Binghamton University research is its focus on psychological flexibility.

Psychological flexibility is the ability to notice what we are thinking and feeling, respond to the situation in front of us, and adjust our behaviour when circumstances change. It does not mean that we never feel anxious, disappointed or frustrated. Instead, it means that we can experience those feelings without becoming completely stuck in them.

Consider a child who has a disagreement with a friend at school.

One response might be: "She didn't sit with me today. She doesn't like me anymore. Nobody wants to be my friend."

The child may become increasingly upset, replaying the situation and struggling to consider alternative explanations.

With support, the child might eventually learn to step back and think: "I'm feeling worried because she sat somewhere else today. I don't know why she did that. Maybe I can ask her tomorrow."

The disappointment has not necessarily disappeared, but the child now has more room to consider what happened and decide what to do next.

This is the kind of flexibility that psychological interventions often aim to develop.

Children learn to recognise emotions, question assumptions, consider alternative perspectives and choose helpful responses rather than reacting automatically.

But here is the important connection:

it is often much harder to use these psychological skills when we are exhausted, hungry or physically depleted

A tired child may find it harder to pause before reacting. A hungry child may have less patience for a frustrating task. A child who has spent the entire day sitting indoors may benefit from movement before being expected to sit down and talk through a difficult situation.

Food, sleep and exercise do not replace psychological support. They help create the conditions in which children can make better use of it.

5. Why I start with the basics when a child is struggling

When parents contact me about depression, anxiety, emotional regulation difficulties or other concerns, I want to understand the whole child and the context in which their difficulties occur.

That includes their thoughts, feelings, behaviour, relationships, developmental history and experiences at home and school. It also includes the more ordinary details of everyday life.

What does a typical day look like?

When does the child become most distressed?

Are they sleeping well?

Are they eating regularly?

Do they have opportunities to move, play and relax?

Is their schedule so full that there is little time to recover from the demands of the day?

These questions are not intended to suggest that parents have caused their child's difficulties by getting something wrong. Families have different circumstances, and many parents are already doing their best in challenging situations.

Nor are these questions intended to minimise what a child is experiencing. Depression is not simply a lack of exercise, anxiety is not caused by skipping breakfast, and significant emotional difficulties should never be dismissed with advice to get more sleep.

Rather, these questions help us identify factors that may be contributing to the problem or making it harder to cope.

Sometimes the answers reveal straightforward changes that could help. Sometimes they highlight barriers that need addressing, such as a child who cannot sleep because of persistent worries, struggles to eat because of sensory sensitivities, or avoids physical activity because of social anxiety.

And sometimes the basics are already in place, but the child is still struggling significantly. That is useful information too. It tells us that we need to look further and consider what additional assessment or intervention might be appropriate.

Starting with the basics is not the same as stopping there

6. Small changes are often more realistic than a complete overhaul

When a family is already under pressure, recommending changes to every aspect of daily life is unlikely to be helpful. Parents do not need another lengthy list of things they should be doing better.

Instead, I encourage families to identify one or two manageable changes that fit their circumstances.

For example:

• If breakfast is regularly missed, could a simple, familiar breakfast be prepared the night before?

  
  

• If bedtime is chaotic, could the family introduce one predictable step that signals the transition towards sleep?

  
  

• If a child spends most afternoons indoors, could a short walk or some outdoor play become part of the routine?

  
  

• If the school day leaves a child hungry and exhausted, could the family review what the child is managing to eat and drink during school hours?

  
  

• If the child is overwhelmed by a packed schedule, is there room for some unstructured time to relax and recover?

  
  

It is also worth involving children in the conversation in an age-appropriate way. Rather than telling them that they need to change their habits because they are affecting their mental health, we can help them notice connections for themselves.

"Do you notice that getting to bed late makes mornings harder?"

"Does having something to eat after school help you feel a little less grumpy?"

"How do you feel after we have been outside for a while?"

This approach helps children develop self-awareness without making them feel that their emotions are their fault.

The aim is not to make children responsible for fixing their own mental health. It is to help them recognise that there are some things they can do to support themselves, while ensuring that adults provide the guidance and support they need.

The bottom line: boring does not mean unimportant

When a child is struggling emotionally, parents understandably want answers and effective solutions. They want their child to feel better, to enjoy school, to manage friendships and to feel more confident in everyday life.

Psychological therapy can be an important part of that process. Depending on the child's needs, treatment might involve cognitive behavioural therapy, emotion-regulation strategies, parent guidance, support with relationships or further assessment.

But before we begin, I want to understand whether the foundations are there.

Are they eating enough?

Are they sleeping enough?

Are they getting opportunities to move and play?

These questions may not feel as sophisticated as exploring thinking patterns or learning therapeutic techniques. Yet the research from Binghamton University provides another reminder that everyday habits are associated with the psychological flexibility that helps people manage stress.

We should be realistic about what these habits can achieve. They will not resolve every mental health difficulty, and the study does not prove that changing them will automatically make someone more resilient. But they are important, modifiable parts of the bigger picture.

Sometimes, supporting a child's mental health begins with the basics.

Not because the problem is simple, but because the basics matter.

At Baumgarten Child Psychology and More, I take a whole-child approach to understanding children's emotional and behavioural difficulties. That means looking beyond the symptoms to understand what a child is experiencing, what may be contributing to their difficulties, and what support will help them move forward.

And yes, that includes asking about breakfast.

Because sometimes the most useful place to start is not the most exciting one. It is the one that gives a child the best possible foundation for everything else.