Go behind the scenes as Julio Cesar Chavez Jr. prepares for his showdown with Sergio Martinez. 24/7 Chavez/Martinez debuts Saturday, Sept. 1 at 11:45pm ET/PT on HBO. For more information on HBO Boxing, visit http://itsh.bo/HQspBS. <br />Watch HBO Sports series and events online at HBO GO® http://itsh.bo/mxUXD0.<br />Connect with HBO Boxing:<br />http://www.facebook.com/hboboxing<br />http://www.twitter.com/hboboxing<br />http://getglue.com/hboboxing
