I agree with GQ - if your in the position that dictates physical fitness - don't be a lard ass.... nothing more appealing than seeing a group out looking for a lost family than some fat ass LEO leaning against command car 1 so fat he can't tuck a shirt in - how in the hell would he be able to get it done on foot if he ever had to....
Back on topic.
http://www.crossfit.com/Cross Fit - started when a few guys realized that the typically gym routine did nothing for "real life" physical fitness - basic premise could I scoop up my 11 year old daughter and get the hell outta' Dodge in a reasonable manner - caring a load.
or the wife - or things the family needed to bug - allowing hem to just take themselves.
Real fitness for the real world