Saying "The brain's main job isn't to think—it's to run your body" reflects one influential view, especially from Lisa Feldman Barrett, but it shouldn't be presented as an accepted fact. A better way to say it is:
"One modern theory suggests that one of the brain's most important jobs is to regulate the body and keep it alive while also supporting thinking, emotions, learning, and behaviour."
- Likewise, the phrase "Thoughts are not always facts" is very useful, particularly in mental health and cognitive therapy, but it doesn't mean our thoughts are usually wrong. A clearer explanation is that our brains interpret information, and sometimes those interpretations can be inaccurate or influenced by past experiences.
With those small changes, this makes an excellent chapter that connects biology and psychology.
Your Brain: More Than Just Thinking
Level 1 – Easy Read
What Does Your Brain Do?
Many people think the brain's main job is thinking.
Thinking is important, but your brain does much more.
Your brain helps keep you alive every second of the day.
It helps control:
❤️ Your heartbeat
🌬️ Your breathing
🌡️ Your body temperature
🍎 Digestion
😴 Sleep
💪 Movement
😊 Emotions
🧠 Learning
🩸 Hormones
🛡️ Many systems that help keep your body working properly
Your brain is always working—even while you are asleep.
Your Brain Uses Energy
Your brain uses a lot of your body's energy.
It is always planning ahead.
It predicts what your body may need next.
For example:
Walking upstairs
Running for a bus
Eating lunch
Sleeping
Exercising
Your brain helps prepare your body for these activities.
Learning from Experience
Your brain learns from past experiences.
It looks for patterns.
These patterns help you:
Recognise faces.
Understand language.
Cross the road safely.
Learn new skills.
Avoid danger.
Most of the time, these predictions are helpful.
Sometimes, however, your brain may make mistakes or misinterpret a situation.
Thoughts Are Not Always Facts
We all have thoughts every day.
Some thoughts are accurate.
Some thoughts are not.
Sometimes our thoughts are influenced by:
Stress
Anxiety
Fear
Tiredness
Past experiences
This is why it can help to pause and ask:
"Is this thought definitely true, or could there be another explanation?"
Your Brain Can Learn New Ways
The brain can change throughout life.
This is called neuroplasticity.
When you practise something often, your brain strengthens those connections.
Examples include:
Learning to read.
Riding a bicycle.
Learning a new language.
Developing healthier habits.
Practising relaxation techniques.
Learning takes time and practice.
Looking After Your Brain
You can help keep your brain healthy by:
Getting enough sleep.
Eating a balanced diet.
Exercising regularly.
Managing stress.
Learning new things.
Spending time with other people.
Taking breaks when needed.
Healthy habits support both your brain and your body.
Remember
✔ Your brain helps keep your body alive.
✔ Your brain also helps you think, learn, remember, and solve problems.
✔ The brain learns from experience and looks for patterns.
✔ Thoughts are not always completely accurate.
✔ The brain can continue learning and changing throughout life through neuroplasticity.