The BEST Ab Routine for Swimmers?! (ft. Caeleb Dressel)

The fastest swimmers in the world all have incredible core strength and stability. So if you want to be a fast swimmer, you have to have a really good body line not only off the wall, but while you're swimming as well.
We tried the Gold Medal Abs Routine from Caeleb Dressel and Ryan Lochte, PLUS a few extra core exercises for swimmers!