'Must-See' Expos in Vegas?

I’ve got a free stay in Las Vegas from one of those time share promotional offers and really want to schedule it when there is another nutrition/fitness expo/convention in Las Vegas.

I missed Mr. O this year but are there any other fitness/exercise expo’s or conventions going on in Las Vegas this year that might be equally cool to check out???

Any suggestions on up coming events in Vegas would be greatly appreciated.
Thanks