Episode 30: tight abs are nice, but are only once piece of the puzzle. For core rigidity, which is the foundation of support for nearly all we do in Olympic lifting  or your local Crossfit box, you need to engage the core, support the lumbar spine, execute proper breathing ALL BEFORE you engage into that next lift or rep. Here, Dr. Tim demonstrates a Hollow Body Rock using the Soda Can analogy.

SODA CAN ANALOGY