People | SportsNewser Video: Sister of Jets' Mangold is Aspiring Olympic Weightlifter By Cam Martin on Jun. 29, 2011 - 1:55 PM Holley Mangold, sister of Jets’ center Nick Mangold, weighs 370 pounds and is vying to become an Olympic weightlifter. MTV is covering her story on its show True Life: I’m the Big Girl, which premieres Thursday at 11/1 ...