Why Students Forget Everything After Studying (Brain Science Explained)

Why Students Forget Everything After Studying

Introduction

“Have you ever studied for hours but still forgot everything during exams?
The real reason may not be your effort it could be stress damaging your brain.”. 

This happens to a lot of students and is due to how our brains are developing when we experience stress while studying. therefore the question is why students forget after studying.
Study stress can change three things about how we use our brains:

1.  Brain development
2. Memory use
3. Decision-making processes

this is how stress affects memory during exams

In this article, we will learn about what happens in the brain during stress, how studying under stress influences brain development, why some students forget everything after their exams have been graded and how to protect your brain from harm and help you remember what you studied.
Let's start with the science: 👇

What is Study Stress? 

Study stress is defined by the pressure placed on students to:

• Perform well on their exams
• Meet assignment deadlines
• Meet the expectations of parents and teachers
• Not to let themselves down by failing

When students study and feel stressed out by the pressure mentioned above, the body releases a stress hormone called cortisol. The release of this hormone helps you focus on short-term goals (such as studying for an exam) but if the student continues to study and feels stressed for a long period of time (chronic stress), then the hormone starts to kill off brain cells.

🧬 How Stress Works in the Brain (brain fog during exams)

When you are stressed out, there is a biological response that occurs in your brain. The amygdala is activated and releases cortisol (the stress hormone) which now causes your brain to shift into fight or flight mode, which in turn affects the following major areas of the brain: (1) Hippocampus and (2) Prefrontal cortex.

1. HIPPOCAMPUS (Memory) 

It stores all of the new information you have learned and helps you organize your thoughts. If you are stressed out, then your hippocampus will shrink and cause you to have less memory ability.

2. PREFRONTAL CORTEX (Thinking) 

Use the prefrontal cortex when you want to make good decisions. The prefrontal cortex provides ultimate authority when making any type of decision (good, bad, wrong, etc).

3. Amygdala (Emotional Center)

Is Responsible for Fear & Anxiety

👉 An Overactive Amygdala Due to Stress = More Anxiety

How Study Stress Affects Brain Development:

1. Slows Brain Growth

Chronic Stress Can:

• Reduce Growth of Brain Cells
• Damage Connections Between Neurons
• Studies Show Stress Alters Brain Structure & Reduces Neural Pathways

2. Weakens Memory

Students Under Stress May:

• Forget Information Quickly
• Have Difficulty with Recall During Testing

This Is Due to Stress Causing Damage to the Hippocampus.

3. Reduces Learning Ability

Stress Impacts:

• Focus
• Understanding
• Retention

Although They May Increase Study Time, Students Under Stress May Not Learn Anything.

4. Affects Development of Young Students’ Brains

Stress in the Early Years Affects:

• Brain Structure
• Subsequent Intelligence

Studies Have Found That Stress From Early Years Affects Brain Development & Connectivity.

5. Changes the Brain Long-Term

Long-Term Stress Can:

• Reduce Volume of the Brain
• Create Difficulty in Regulating Emotions
• Create Higher Risk for Depression

EX: A New Study Found That Pandemic-Stressed Teenage Brains Looked Older Than Unstressed Brain.

😰 Why Do Students Forget Everything After Exams?

This Is A Major Problem That Students Face.

Here Are The Main Reasons:

1. Cramming (Short-Term Memory)

The Information Is Temporarily Stored, Then Disappears.

2. Stress Block Retrieving Memory

Stress Hormones Interfered with Retrieval of Memory.

3. Too Few Revisions

Without Repetition, There Is No Long-Term Memory.

4. Too Little Sleep

Memory Storage While Sleeping

Less Sleep = More Forgetting.

👉 Studies Show Improved Sleep Increases Brain Function.

Why Does Stress Affect The Brain?

Stress can cause your body to produce:

• Cortisol
• Adrenaline

Both of these chemicals can have a negative impact on your brain cells.

If you're under long-term stress, the chemicals produced will cause:

• Destruction of Brain Cells
• Reduced Connection Between Neurons
• Negative Impact on the Working Memory

Research has proven that stress has a negative impact on brain areas, especially the hippocampus (the area of the brain that is tied to memory) and the prefrontal cortex (our "thinking" area of the brain).

Signs That Your Study Stress Is Affecting Your Brain!

• Forgetting everything you studied after your exam.
• Having trouble focusing.
• Feeling very tired after studying.
• Experiencing anxiety before your exam.
• Not being able to sleep well.

If you identify these signs in yourself, you might have study stress.

How Can You Protect Your Brain From Study Stress?

1. Use Spaced Repetition 

Instead of cramming for exams, divide your studies into smaller parts and study over a period of time.

2. Use Active Recall 

Instead of just reading your material, test yourself over the material.

3. Get At Least 7–9 Hours of Sleep Per Day (Very Important) -

Sleeping for at least 7–9 hours daily can have a positive impact on memory.

4. Take Breaks 

Study for 25 minutes of time and take a 5-minute break.

5. Exercise Regularly 

Regular exercise can reduce stress levels and improve brain function.

6. Stop Overthinking 

Too much thinking can increase your stress level.

7. Organize Your Study Time 

Plan your study schedule.

The Difference Between Positive Stress and Negative Stress

It is important to understand that not all stress is bad.

Positive Stress (Short-term)

• Makes you feel motivated
• Increases your ability to concentrate

Negative Stress (Long-term)

• May damage your brain
• Decreases your ability to learn
• Long Term Impact of Study Stress

If you don't learn to control your stress, it could cause:

• Anxiety
• Depression
• Burn Out
• Memory Issues

According to research, repeated exposure to stress can lead to the alteration of the brain's structure and cause negative impact on your mental health.

🧠Summary

Stress from study can be a lot more powerful than most students think, and that it can impact a lot more than just your mood; it can also have an effect on how your brain grows and develops.

What's nice is that:

• You can take control of the stress from study
• You can make yourself have better memory
• You can train your brain to become more effective.

Utilizing smart study strategies will allow your brain to work together with you instead of against you!

FAQs

Is stress harmful to the brain irreversibly?

Chronic stress can change your brain, but the brain does heal itself when you engage in healthy activities.

Why do I have memory problems after taking tests?

You may experience difficulties remembering information after tests due to the stress of cramming for tests as well as insufficient amounts of time spent studying for tests.

Does stress negatively affect IQ?

Stress does not directly affect IQ; however, it does impair your ability to think and perform at your best.

What can I do to study without becoming anxious or stressed out?

To avoid anxiety and stressful situations when studying, use spaced repetition when studying, get adequate sleep and do not leave studying until the last minute.