One type of butt clenching is "the true clench," she says. According to Heather Jeffcoat, DPT, a Los Angeles-based ...

Day or night, jaws clench, heads spin, and symmetries distort. Bruxism, a disorder involving involuntary grinding, crunching, ...

Sam covers politics, with the occasional foray into entertainment news. He previously worked in the Canberra press gallery and as news.com.au’s US correspondent. Sam led our coverage of the 2016 ...