On top of this, they have a Subscribe wall. Who exactly runs washingtonpost.com? And why do they need to get personal with me?
Moreover is the content going to add to anything more than we know about endorphins all ready?
"...people with lower fat-adjusted leptin levels, such as high-performance marathon runners, could potentially be more susceptible to the rewarding effects of running and thus possibly more inclined to exercise."
That's basically it. Some folks get more of a 'high' from exercise than others. Big news, right? While I love the research, the way that page redirects and all the ads it's serving up (21 just now) are complete bullshit, and the information in the 'article' is not at all worth bothering with it in my opinion.
We know that you can give people endorphin blockers before they exercise and they still report feeling better after exercise.
This article is about leptin, not about endorphins.
I use the Stylebot extension to strip away this sort of cruft on sites I visit frequently - it's almost always just setting 'display: none;' on a couple of elements.
Maybe you'll need to quit complaining and read the article to find out.