Barefoot running.Couch to 5k.
Running skirts.Heart rate training.
Minimal footwear.Run less, run faster.
Running fads cycle in and out, a lot like fashion, and - also like fashion - they can be a mix of dos and don'ts. You ever see a model in an outfit and say, "It works for her, but I could never pull it off"? Well, that's a healthy attitude toward fads, too.
Now I'm not saying barefoot running is bad or Chi running will injure you. What I am saying is that these surges of popularity are accompanied by testimonials and reports that elevate certain techniques and styles to the level of a magical cure. But they aren't. No one gait, shoe, technique, pace, or training plan will work for everyone, and none of those things are the secret to a fantastic PR unless they are accompanied by common sense and hard work.
The following statement applies to all running fads: This won't work for everyone. You need to know your own body and abilities well before trying something new, and you absolutely need to ease into any change slowly to avoid injury. Be smart. Be careful.
And above all, don't fix what isn't broken. If you are running fast, happy, and injury-free, and if you are setting and achieving goals, I think you've hit the sweet spot. Don't change a thing.