Melissa Walker, a journalist for ivillage quoted Alan Hersch, MD saying, "Endorphins are neurotransmitters produced in the brain that reduce pain [...] they have also been known to induce euphoria (Walker, 2011. para 2)."
I am not a scientist, nor a biologist. I just know that I love endorphins and always have. I love the feeling after I run, do squats, sprints, and all manner of workouts. I usually have a bounce in my step and a smile on my face.
Just last Thursday when I worked out, it was the first time that I ran a certain length of the track non-stop, and as I crossed my goal finish line, I had a giant smile on my face. The combination of endorphins with the euphoria of actually meeting a goal of mine was wonderful!
So, endorphins, keep 'em comin'!