Dave Castro hasn't wasted any time letting the new year settle in before giving out his first hints for the 2018 CrossFit Games Open.

We've got a pair of 50lb dumbbells, a barbell loaded to 135lb, some markings on the floor, and a pretty standard looking gym in the background.

In the 2017 Open, we were first introduced to the dumbbells in 17.1 and 17.2. In the 2016 Open, we had walking lunges for the first time.

Each year, Castro finds a way to put together workouts with new and surprising twists while also making tough, painful tests of fitness. 

What should we expect in the 2018 Open?