When you’re feeling low, anxious, overwhelmed, or emotionally exhausted, being told to “just exercise more” can feel dismissive. For many people, it lands as another thing they’re failing at. If you’re already struggling to get out of bed, keep up with work, or manage daily responsibilities, the idea of going to the gym can feel completely unrealistic.

And yet, decades of research consistently show that movement plays a meaningful role in supporting mental health.

Importantly, the type of movement that supports mental wellbeing often looks very different from the exercise culture we see online. It doesn’t have to be intense or push you to exhaustion. Nor does it require long sessions, strict routines, or a focus on weight loss and appearance. Most of all, it doesn’t need to be done perfectly to be helpful.

Instead, small, consistent, achievable movement can help regulate mood, reduce stress, improve sleep, and strengthen emotional resilience.

This article explores:

  • How exercise supports mental health
  • What the research says (including Australian data)
  • Why movement feels so hard when you’re struggling
  • How to approach exercise in a psychologically supportive way
  • When therapy may also be helpful

The Mental Health Landscape in Australia

Before exploring how exercise helps, it’s important to understand the context. According to the Australian Bureau of Statistics (ABS), approximately 1 in 5 Australians experience a mental health disorder in any given year. Anxiety disorders are the most common, followed by depression. In NSW, demand for psychological services continues to increase, particularly in metropolitan areas such as Sydney.

At the same time, physical inactivity remains common. The Australian Institute of Health and Welfare (AIHW) reports that nearly half of Australian adults do not meet national physical activity guidelines (which recommend 150–300 minutes of moderate activity per week).

These two public health trends are closely connected. Research suggests that regular physical activity can reduce the risk of developing depression by up to 20–30%. It is also associated with lower levels of anxiety, improved stress tolerance, and better overall wellbeing. Movement is not a cure, but it is a powerful protective factor.

How Exercise Supports Mental Health

1. It Influences Brain Chemistry

Physical activity increases neurotransmitters such as:

  • Serotonin (involved in mood regulation)
  • Dopamine (linked to motivation and reward)
  • Endorphins (associated with pain reduction and positive mood)

These changes can contribute to noticeable shifts in mood and anxiety – sometimes even after a single session. Exercise also increases Brain-Derived Neurotrophic Factor (BDNF), a protein that supports neural growth and resilience. Lower levels of BDNF are associated with depression, so increasing it through movement may play a protective role.

2. It Regulates the Stress Response

Chronic stress keeps the nervous system in a heightened state of alert. Cortisol levels remain elevated, the body feels tense, and sleep becomes disrupted. Moderate physical activity helps regulate this stress response. Over time, it supports better nervous system balance and can reduce the intensity of stress reactions. Many people describe feeling:

  • Calmer
  • More grounded
  • Less reactive
  • More capable of coping

3. It Improves Sleep Quality

Sleep and mental health are deeply interconnected. Poor sleep increases vulnerability to anxiety and depression. Conversely, anxiety and depression often disrupt sleep. Research consistently shows that regular movement improves:

  • Sleep onset (falling asleep more easily)
  • Sleep depth
  • Overall sleep quality

Better sleep then supports emotional regulation, concentration, and resilience.

4. It Builds Psychological Capability

Exercise can strengthen more than muscles. It can build self-efficacy – the belief that “I can take action even when things feel hard.” When someone experiencing depression manages a short walk, stretch, or swim, it can gently challenge the internal narrative of helplessness. Over time, these small behavioural shifts can reinforce a sense of capability.

5. It Encourages Social Connection

Loneliness is increasingly recognised as a significant mental health risk factor. In Sydney’s fast-paced, achievement-oriented culture, many people report feeling socially isolated despite busy lives. Group activities such as:

  • Walking groups
  • Community sport
  • Yoga classes
  • Parkrun events
  • Dance or movement classes
  • can provide both movement and connection.

Importantly, the focus does not need to be competition. Shared experience alone can be protective.

How Much Exercise Do You Actually Need?

Australian Physical Activity Guidelines recommend:

  • 150–300 minutes of moderate activity per week
  • Muscle strengthening activities on at least 2 days

However, from a mental health perspective, more is not always better. A large international study published in The Lancet Psychiatry found that people who exercised between 3-5 times per week experienced the greatest mental health benefits. Beyond that, the benefits plateaued.

This suggests that moderate, consistent movement may be optimal for mental wellbeing. Even short periods – 10 to 20 minutes – can produce meaningful mood shifts.

Exercise isn’t a cure, and it’s not a substitute for therapy or medication when those are needed. Instead, it works best as a supporting strategy, something that can sit alongside psychological treatment and help create a more stable foundation for wellbeing.

Exercise and Mental Health

Why Exercise Feels So Hard When You’re Struggling

If movement is helpful, why is it often the first thing to disappear during difficult periods?

Depression affects motivation pathways (dopamine systems), energy levels, executive functioning, and self-belief. Anxiety can make physical sensations uncomfortable. Increased heart rate, breathlessness, and sweating can mimic anxiety symptoms, which may feel distressing. Burnout reduces physical and emotional capacity.

So when someone thinks, “I know exercise helps, but I just can’t do it,” this is not laziness. It is often a symptom. Instead of asking, “Why can’t I just push through?” a more compassionate question might be: “How can I lower the barrier enough that this becomes possible?”

Making Movement More Mental-Health Friendly

Here are some gentle ways to approach exercise when your mental health, not fitness, is the priority.

1. Start Much Smaller Than You Think

A short walk, a few stretches, or standing up and moving between tasks is enough to count. The goal is regular movement, not pushing yourself into a new routine that isn’t sustainable right now.

2. Choose Activities That Feel Neutral or Pleasant

It’s okay to not “love” exercise. Aim for something that feels manageable or even just “okay.” Walking, swimming, gentle yoga, gardening, or moving to music at home all count.

3. Separate Exercise from Appearance Goals

When movement is tied to weight loss or self-criticism, it often becomes unsustainable. For mental health, exercise works best when framed as:

  • Regulation
  • Care
  • Support
  • Maintenance

Not punishment.

4. Focus on After-Effects, Not Motivation

Motivation often comes after movement, not before it. Try noticing whether you feel even slightly calmer, clearer, or more settled once you’re done. Or do you get a better nights sleep? Does your appetite improve?

5. Expect Ups and Downs

Some weeks movement will feel easier; other weeks it won’t happen much at all. That’s normal. A flexible approach is far more helpful than an all-or-nothing mindset.

6. Use Support

Low-pressure accountability can help. Options include:

  • Exercising with a friend
  • Booking a class
  • Working with a physiotherapist or trainer familiar with mental health
  • Setting gentle reminders

For some people, integrating movement goals into therapy can provide structure and emotional support.

Exercise Is Not a Replacement for Therapy

While exercise is beneficial, it is not a standalone treatment for moderate to severe depression, significant anxiety disorders, trauma, or complex mental health conditions. Psychological therapy offers:

  • Cognitive restructuring
  • Emotional processing
  • Trauma work
  • Behavioural activation
  • Skills for distress tolerance
  • Interpersonal exploration

Exercise can complement these interventions. It creates physiological stability that makes psychological work more accessible. For some individuals, medication may also be part of treatment, if recommended by a medical doctor. Exercise does not replace appropriate medical care. The most sustainable improvements often come from a combination of approaches tailored to the individual.

Exercise and Mental Health

Exercise and Specific Mental Health Conditions

  • Depression: Behavioural activation – a core evidence-based treatment for depression – often includes structured activity scheduling. Movement plays a key role in this model. Regular exercise is associated with reduced depressive symptoms and may reduce relapse risk.
  • Anxiety: Gradual exposure to increased heart rate and breathlessness through exercise can help reduce fear of bodily sensations. This is particularly relevant for panic disorder.
  • Stress and Burnout: Gentle aerobic movement supports nervous system regulation and stress recovery.
  • ADHD: Exercise may support attention and executive functioning by increasing dopamine and norepinephrine availability.

When to Seek Additional Support

If you are experiencing:

  • Persistent low mood
  • Significant anxiety
  • Loss of interest
  • Sleep disturbance
  • Ongoing overwhelm
  • Thoughts of hopelessness

It may be helpful to speak with a psychologist. Exercise can support your wellbeing, but you do not have to manage mental health alone.

Taking the Next Step

At MyLife Psychologists in Sydney, we work with older adolescents (16+) and adults navigating anxiety, depression, stress, burnout, and life transitions. Therapy can help you explore:

  • Practical strategies to build movement sustainably
  • Barriers to motivation
  • Self-criticism patterns
  • Behavioural activation approaches
  • Nervous system regulation skills

If you would like support integrating movement into your mental health plan – or if you are feeling stuck – we invite you to book a free 15-minute call with our care coordinator to discuss your needs.

Small changes can lead to meaningful shifts over time.

References and Resources

Australian Institute of Health and Welfare (AIHW): Physical activity data and statistics.

Australian Bureau of Statistics (ABS): National Study of Mental Health and Wellbeing.

The Lancet Psychiatry (2018): Association between exercise and mental health.

Beyond Blue:Keeping Active.

healthdirect Australia: Exercise and mental health.

Black Dog Institute: Lifestyle and mental health resources.