You feel good after running primarily because your body releases endorphins and other feel-good chemicals during and after the exercise.
Here's a more detailed explanation:
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Endorphin Release: During a run, especially a strenuous one, your body releases endorphins. These are natural pain relievers and mood elevators. The popular term "runner's high" is often associated with this endorphin release, leading to a feeling of euphoria and well-being. This feeling can be short-lived but profoundly positive.
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Other Neurotransmitters: Besides endorphins, running also stimulates the release of other neurotransmitters like dopamine, serotonin, and norepinephrine. These chemicals are linked to:
- Dopamine: Associated with pleasure and reward.
- Serotonin: Contributes to feelings of happiness and well-being.
- Norepinephrine: Involved in alertness, focus, and mood.
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Reduced Stress and Anxiety: Exercise, including running, is a known stress reliever. It can help to reduce levels of stress hormones like cortisol, promoting a more relaxed and positive mental state.
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Sense of Accomplishment: Completing a run, especially a challenging one, can lead to a sense of accomplishment and pride. This feeling boosts your self-esteem and contributes to overall positive mood.
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Improved Sleep: Regular running can improve sleep quality. Better sleep, in turn, leads to improved mood and cognitive function.
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Social Benefits (if applicable): Running with others can provide social interaction and support, further enhancing positive feelings after the run.
In summary, the positive feelings experienced after running are a result of a complex interplay of physiological and psychological factors, including the release of endorphins and other neurotransmitters, stress reduction, a sense of accomplishment, and improved sleep.