Exercise Ball Prone T Extension
When they say you have to cross all your T’s, they might not be talking about this exercise specifically. Nonetheless, trust us they would approve of you making sure you do this exercise to strengthen your back and your core
Lie face down over an exercise ball with your elbows straight. Slowly raise your arms upward and return to original position. Your thumbs should be pointed upwards the entire time. Be sure to pinch your upper back and hold for 2 seconds before returning to original position.