March 8th, 2026 — by Zoe Philp

Between lectures, assignments, and everything else that comes with busy university life, exercise is often the first thing people cut from their schedule. But ironically, physical activity might be one of the simplest and most effective ways to improve mood and overall health.

One reason exercise helps us feel better is because of what happens in the brain. When we move our bodies, the brain releases endorphins, often called the body’s “feel-good” chemicals. These help reduce stress and create positive feelings after physical activity. Exercise also increases neurotransmitters like serotonin and dopamine, which help regulate mood, motivation, and emotional balance. This is why even something as simple as a short walk can leave you feeling more energized and clear-headed.

Fun fact: Endorphins act as the body’s natural painkillers. They bind to the same receptors in the brain as opioid medications, which is why exercise can temporarily reduce pain and create that relaxed, positive feeling people sometimes call a “runner’s high.”

Researchers also suggest that this post-exercise feeling may be influenced by endocannabinoids, natural chemicals in the body that can cross into the brain and help reduce anxiety and increase feelings of calm after physical activity.

Beyond the immediate mood boost, regular exercise has important long-term benefits. Studies show that people who stay active tend to experience lower levels of anxiety and depression, better sleep, and higher energy levels. Physical activity also supports heart health, immune function, and overall well-being.

At the end of the day, exercise is more than just a way to stay physically fit. It’s a powerful way to manage stress, improve mood, and support long-term health. Sometimes the best thing you can do for your mind isn’t another coffee, it’s simply getting up and moving.

References

Harvard Health Publishing. (2021). Exercise is an all-natural treatment to fight depression. Harvard Medical School. https://www.health.harvard.edu/mind-and-mood/exercise-is-an-all-natural-treatment-to-fight-depression

Johns Hopkins Medicine. (n.d.). The truth behind “runner’s high” and other mental benefits of running. https://www.hopkinsmedicine.org/health/wellness-and-prevention/the-truth-behind-runners-high-and-other-mental-benefits-of-running