The Twist Engine
Power from a wrung-towel unwind
Throw a ball, swing a bat, do a cartwheel â all powered by the twist: your hips and shoulders rotating against each other like a wrung-out towel, then snapping back.
A throw â hips and shoulders rotating
Real anatomy picture coming soon
Real anatomy photo spot: the mid-section rotating as the arm follows through
The wrung towel
Your mid-section (the thoracic spine from Lesson 13) is built to rotate. In a throw, your hips turn one way while your shoulders lag behind â twisting your trunk like wringing a towel. Then the twist snaps back, whipping your arm forward. The power comes from the unwind, not from the arm alone!
Power from the ground
Watch a thrower: the chain starts at the feet. Force travels up the leg, through the pelvis (Lesson 12), twists through the trunk, and only at the very end does the arm flick. Small players can throw hard because the whole body works as one twisted spring. That's the twist engine!
Mr. Bones says: I'm a fictional skeleton, not a doctor! This is for learning and fun. If anything hurts, stop and tell a grown-up you trust.
