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The Towel Drill

A towel under the lead armpit is the cheapest swing sensor ever invented. If it drops early, your arms left your body behind. If it stays, you're connected.

What it fixes

Connection means the arms and torso rotate as one unit, so the barrel is driven by the big muscles of the body instead of thrown by the hands. When the lead arm drifts away from the chest early, the swing gets long, weak, and hard to repeat. The towel makes the invisible visible: it physically cannot stay pinned unless the lead arm stays connected through rotation.

How to do it

1. Fold a small towel and tuck it under your lead armpit, the arm closest to the pitcher. A batting glove works too.
2. Take your normal stance at a tee with the towel pinned lightly between arm and torso. No squeezing.
3. Swing and hit the ball. The towel should stay pinned until contact, then release naturally into the follow-through.
4. If the towel drops before contact, the lead arm disconnected early. Slow the swing down and feel the chest and arm turn together.
5. Run 2-3 sets of 10, adding speed only when the towel behaves.

Common mistakes

• Clamping the towel with a death grip. Light pressure only; the rotation should hold it, not the squeeze.
• Shortening into a punchy half-swing just to keep the towel in place. Swing normally and let the towel tell the truth.
• Expecting the towel to stay through the finish. Releasing after contact is correct; full extension happens past the ball.

Coaching cue

"Turn the triangle." The two arms and the chest form a triangle; rotate the whole shape to the ball instead of breaking it apart.