One woman's trip to the gym ended with a brawl and destruction, video shows. A pair of videos posted to Facebook by Alexia Delange show an unidentified woman threatening to kill a Planet Fitness employee in Grand Rapids, Michigan before she starts throwing objects at the man — including a desktop computer. She continues to threaten and shout expletives at the worker, the video shows, and then lunges at him. She tumbles to the floor but gets back up and throws some punches. The video shows the employee deflecting the attacks. "Let's go," she shouts. She then appears to blame...