Free running or is a combination of urban acrobatics and running. It consists of performing tricks and jumps over anything along your route.
Participants, known as freerunners, use the city and rural landscape to perform movements through its structures. It is commonly practiced at gymnasiums and in urban areas (such as cities or towns) that are cluttered with obstacles.
You could of course do it anywhere where there are structures you could use to do this, and I guess it could be loads of fun in an urban environment.
The term was used during the filming of Jump London, as a way to present parkour to the English-speaking world.
However, the term has come to represent a separate concept, distinctly different from parkour. It’s more an expression of freedom while doing what you love to do.
It’s a obviously a way to make your training much more exciting and also giving your upper body a serious workout. It would seem that you would need great upper body strength to perform some of the tricks.
Freerunning then is a way to get a total workout, however after watching the video below you can see that this form of running requires a large amount of practice.
It also seems fairly dangerous so if you are looking to try this out, take it easy. And personally just running is good enough for me, I can however see that it would appeal to many athletes as a variation in their training.
Also if it gets more people exercising, then it cant be bad.
Check this video out to get the idea.