chemistry

Runner's high

Runner's high is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Runner's high rather than just read about it. In short: The runner's high is a transient state of euphoria coupled with lessened feelings of anxiety and a higher pain threshold, which can come either from continuous moderate physical exertion over time or from short bursts of high-intensity exercise. The exact prevalence is unknown, but it seems to be a relatively rare phenomenon that not every athlete experiences.

Key takeaways

Runner's high belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Runner's high to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Runner's high from memory before moving on to harder problems.

Reference excerpt

The runner's high is a transient state of euphoria coupled with lessened feelings of anxiety and a higher pain threshold, which can come either from continuous moderate physical exertion over time or from short bursts of high-intensity exercise. The exact prevalence is unknown, but it seems to be a relatively rare phenomenon that not every athlete experiences. The name comes from distance running, and it is alternatively called "rower's high" in rowing.

Mechanism of action Current medical reviews indicate that several endogenous euphoriants are responsible for producing exercise-related pleasurable feelings, specifically phenethylamine (an endogenous psychostimulant), β-endorphin (an endogenous opioid), and anandamide (an endogenous cannabinoid). However, more recent studies suggest that endorphins have a limited role in the feelings of euphoria specifically related to the runner's high due to their inability to cross the blood-brain barrier, placing more importance in the endocannabinoids instead, which can cross this barrier. The release of endocannabinoids is greater during longer and more extreme periods of physical exertion, which is why the runner’s high is more associated with long distance running than sprinting. Even when the amount of endocannabinoids released is similar, the deeper concentration and positive mood changes associated with running are more common among regular runners than occasional ones, and its prevalence seems to be independent from factors such as weight, sex and age. New runners barely, if ever, report any positive feeling when running, relating a rather painful experience instead.

Subjective experience There are many different accounts of how the euphoric experience of a runner’s high feels to an individual. Many runners emphasize a feeling of lessened pain and antinociceptive responses during extreme exertion. The runner’s high is often characterized by feeling a dissolution of boundaries and restrictions related to time, space and body, leading to a sense of pleasure. This allows runners to let go of their surroundings and immediate experience, and disassociate with the physical world to take a back seat. Another common experience described by runners is a greater appreciation and association with the world around them as bodily functions related to running become a part of the subconscious. Heightened awareness, specifically of natural surroundings, relaxes the mind and leads the runner to experience a deep connection to the world around them. The runner's high is also prevalent in those who run directly after a long term injury, as the jump from a deep sense of bodily function and pain to a flow state could cause increased feelings of euphoria.

Athlete experiences Many top athletes have reported feeling the runner’s high. Usain Bolt, Jamaican sprinter and world record holder in the 100 meter dash, spoke on his experience with runner’s high. Bolt attributed his euphoric state to his competitive nature and the experience of achieving a personal best, as well as the hard work put into achieving his goals. Kate Carter, Runner’s World commissioning editor and sub three hour marathon runner wrote of how her runner’s high experience helped to get her hooked on running after starting at a later age in life. Carter said her peak ecstatic experience from running was in knocking 20 seconds off her marathon personal best.

References

Illustrations

Worked examples

Example 1 — a first encounter with Runner's high

Start with the simplest possible case. Write down what Runner's high claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Runner's high before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Runner's high ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Runner's high

In research: Runner's high appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Runner's high in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Runner's high is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aerobic exercise, Emotions, Exercise biochemistry, so understanding it makes those chapters shorter.
In everyday life: Look for Runner's high outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Runner's high in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Runner's high means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Runner's high out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Runner's high in simple terms?

Why does Runner's high matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Runner's high?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Runner's high.