Yes it is. Free running is a sport
Running Free was created in 1919-02.
free running shoes
The general Charles de Gaulle organized the Free French forces from Britain.
Free Ukrainians organized into a military force
You can get charged with prostitution.
Running Free - film - was created on 2000-06-02.
Running Free - Dragon album - was created in 1977.
Anyone can do free running or become a free runner, but if you are looking for a role type; I would say an athlete.
You continue to train with free running (or parkour), your body will adjust to it and progress in it.
Yes, they could. Though it is not common to see girls perform Parkour[Free running]. Feel free to do it, but use precaution. (:
An astable multivibrator does not require an input clock, therefore can be described as "free-running" in that its running without a reference.