Our work with elite athletes serves as the proving grounds for our methods. Most people don’t play professional sports. But if our methods help athletes at the highest levels, they can work for anyone.
It’s pretty position specific. If the psoas is stiff or you have some low back wonkiness, the “abs” will freak out like this. I feel it’s unlikely water/etc, but you can’t really over do it. I think it’s weakness and stiffness.