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What Happens To Our Brains When We Exercise And How It Makes Us Happier

Posted on by Brandon Klein

Exercise has been touted to be a cure for nearly everything in life, from depression, to memory loss, Alzheimer’s disease, Parkinson’s and more. At the same time, similar to the topic of sleep, I found myself having very little specific and scientific knowledge about what exercise really does to our bodies and our brains.

“Yes, yes, I know all about it, that’s the thing with the endorphins, that makes you feel good and why we should exercise and stuff, right?” is what I can hear myself say to someone bringing this up. I would pick up things here and there, yet really digging into the connection of exercise and how it effects us has never been something I’ve done.

Inspired by a recent post from Joel on what makes us happy I’ve set out to uncover the connection between our feeling of happiness and exercising regularly.
What triggers happiness in our brain when we exercise?

Most of us are aware of what happens to the body when we exercise. We build more muscle or more stamina. We feel how daily activities like climbing stairs becomes easier if we exercise regularly. When it comes to our brain and mood though, the connection isn’t so clear.

The line around our “endorphins are released” is more something I throw around to sound smart, without really knowing what it means. Here is what actually happens:

If you start exercising, your brain recognizes this as a moment of stress. As your heart pressure increases, the brain thinks you are either fighting the enemy or fleeing from it. To protect yourself and your brain from stress, you release a protein called BDNF (Brain-Derived Neurotrophic Factor). This BDNF has a protective and also reparative element to your memory neurons and acts as a reset switch. That’s why we often feel so at ease and things are clear after exercising and eventually happy.

At the same time, endorphins, another chemical to fight stress, is released in your brain. Your endorphins main purpose is this writes researcher McGovern:

    These endorphins tend to minimize the discomfort of exercise, block the feeling of pain and are even associated with a feeling of euphoria.

Overall, there is a lot going on inside our brain and it is in fact oftentimes a lot more active than when we are just sitting down or actually concentrating mentally: