transverse plane

Mid-Back Mobility: Strength With a Twist When your thoracic spine doesn't rotate, you're missing strength and inviting injury elsewhere.

Mid-Back Mobility: Strength With a Twist
When your thoracic spine doesn't rotate, you're missing strength and inviting injury elsewhere.
Perry Nickelston
Wake Up Your Obliques With the Diagonal Side Sit Core strength and stability are built with movements like this, not trying to balance on a BOSU ball.

Wake Up Your Obliques With the Diagonal Side Sit
Core strength and stability are built with movements like this, not trying to balance on a BOSU ball.
Perry Nickelston