While many fighters train with a punching bag, it's not really a fair fight – after all, the bag can't punch back. Stryk's new RXT-1 training robot, however, does exactly that. The device was invented ...

Corrections and Clarifications: Although we quoted Matthew Warner accurately in this story, he now says he misspoke during the interview. He says he was never suspended from school. In the parking lot ...

I recently had an interesting conversation with a friend who is a parent of a baseball player. He rebuked my suggestion to have his son try a few free classes at a martial arts gym, citing how much ...