[Lucas]

Originally Posted by The David

I'm mainly wanting to build endurance and strength.

Have you considered Parkour?

Originally Posted by Wikipedia

Parkour is a physical discipline inspired by human movement. It focuses on uninterrupted, efficient forward motion over, under, around and through obstacles (both human-made and natural) in one's environment. Such movement may involve running, jumping, climbing and more complex techniques. The goal of parkour is to adapt one's movement to any given obstacle in one's path.

According to founder David Belle, the spirit of parkour is guided in part by the notions of "escape" and "reach", that is, the idea of using physical agility and quick thinking to get out of difficult situations, and to be able to go anywhere that one desires

To some people parkour is an extreme sport; to others a discipline more comparable to martial arts. Some consider it a combination of the two, comparing parkour to the stunts and techniques of Hong Kong martial arts star Jackie Chan (who gained his skills while training for Beijing Opera), whose fight and chase scenes take place in industrial or urban environments. Still others see it as an art form akin to dance: a way to encapsulate human movement in its most beautiful form. Parkour is often associated with freedom, in the ability to overcome confining obstacles in one's surroundings, such as railings, staircases, or walls. It also encompasses freedom on non-physical levels. The practice of parkour requires considerable physical and mental dedication, and many adherents describe it as a "way of life."

American Parkour - Home