From sports magazines, they have learned to treat the market like a full-contact sport, replete with war imagery and useless statistics.

As a full-contact sport; moves are not planned or signaled and fighters strike each other with considerable force and speed.

Roller derby is one of the few full-contact sports for women.

Concussions are also a significant factor in rugby union, another full-contact sport.

Trying to tone down a full-contact sport is difficult balance.

Despite the physical demands of this full-contact sport, many competitors have been racing for 20 and even 30 years.

I turned my talent to another full-contact sport because I loved contact.

"It's important to let women play a full-contact sport with the same rules as men," Solomon said.

"But in New York, real estate deals can be a full-contact sport."

People seem less sure of basketball players, whose game was designed to be devious, not the full-contact sport it has become.