The 2018 CrossFit Games Open officially starts on February 22 with 18.1, but Dave Castro isn't going to let numbers get in his way: get ready for 18.Zero on Thursday, January 18.

So what is 18.Zero? We don't really know, to tell you the truth. My guess is it's a way to get people to sign up for the Open, as in before you can do 18.1 you have to do 18.0. It's a little cute, but it makes sense.

Whatever it is, you can watch a live announcement for it:

Find out what @CFthedavecastro has in store for #18pointzero on Thursday 1/18 at 10:15 a.m. EST (local London time) LIVE on the @CrossFitGames' Facebook page | #CrossFit @Reebok #Nano8 pic.twitter.com/Y6mu2dm9ow

— CrossFit (@CrossFit) January 17, 2018

Dan Bailey will be there along with Dave Castro so you know there's the possibility of seeing some fitness. Either way, we'll be tuned in to watch and solve the mystery of 18.Zero.