BE ABLE TO STACK YOUR RIBCAGE AND PELVIS
As described in the video above, it is very common to develop restrictions in the breathing system which may lead to a reduced ability to tuck your pelvis, and stack the ribcage over your pelvis. This can lead to a reduction in "core" pressure and a loss of movement in the hips and shoulders.
There are many variations of what this can look like, but an example is below
When your pelvis and ribcage are "stacked" it creates a pressurized canister or piston effect- which is what is the ultimate goal for your core. This allows better movement and control through your arms and legs.
When you look at photos of pro surfers, you often see this stacked position- even when they are performing critical moves.