Endorphins makes you happy

Most of us are aware of what happens to the body when we exercise. We build more muscle or more stamina. We fell how daily exercise activities become easier if we preactice regularly.
But how exercise activities could make you happy?
We commonly hear the line "endorphins are released" and we conform with that explanation without really knowing what it means. Here is what actually happens:
If you start exercising, your brain recognizes that as a moment of stress. The brain triggers the fight or flight responde to protect yourself from stress. you release a protein called BDNF (Brian-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.

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

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

So BDNF and endorphins are the reasons exercise make us feel good and eventually happy!