Injured back while sneezing

Sammy Sosa is not so popular among Chicago Cub fans, and is now being traded:

But Sosa was suspended in 2003 for using a corked bat, and he batted .253 last season, slumping to 35 homers and 80 runs batted in, his lowest totals since the strike-shortened 1994 season. He landed on the disabled list after injuring his back while sneezing.

Huhh? One of the great power hitters of all time was sidelined by sneezing?! I missed that story.