How to Dominate.

Startup Sequence
1
Orient the device such that the printed arrows are pointing directly down toward the floor.
2
Place both thumbs on the core and wind in the direction of the printed arrows — until the arrows reappear 3 to 4 times.
3
Release the core, grip the handle, and perform small rhythmic circular wrist motions. Consistent resistance means you're in sync.
"I'm pushing in the direction of the arrows but it's not winding."
Ensure the entire device is oriented such that the arrows are pointing directly down toward the floor before you begin winding.
"The core only spins a bit before slowly dying out."
You are either not winding the spring enough, or not providing sufficient acceleration after startup. Wind more turns and rotate faster immediately after release.
01

Forearm Extension

Target: Forearm Extensors

Hold the device up so the ball sits on the thumb side of your hand. Then rotate outward away from your body in a flicking motion. This extends the wrist against resistance, targeting the extensor muscles along the topside of the forearm.

02

Forearm Flexion

Target: Forearm Flexors

Hold the device down so the ball sits on the pinky side of your hand. Then rotate inward toward your body in a cupping motion. This curls the wrist against resistance, directly loading the flexor muscles along the underside of the forearm.

03

Pronation

Target: Pronator, Brachialis, & Brachioradialis

Hold the device up so the ball sits on the thumb side of your hand. Continuously turn your wrist, as if pouring water out of a glass. The pronator muscles work against the gyroscopic torque throughout the full range of rotation.

04

Supination

Target: Supinator & Biceps Brachii

Hold the device down so the ball sits on the pinky side of your hand. Continuously turn your wrist, as if carrying a plate with your palm up. The supinator and biceps work in tandem to drive the rotation against the resistance of the spinning rotor.

05

External Shoulder Rotation

Target: External Shoulder Rotators (Infraspinatus, Teres Minor)

Extend your arm out in front of you and continuously rotate your entire shoulder outward, letting the arm sweep through its full external range of motion. Keep your wrist still — the rotation should come entirely from the shoulder joint. The gyroscopic resistance loads the posterior rotator cuff muscles throughout the rotation.

06

Internal Shoulder Rotation

Target: Internal Shoulder Rotators (Subscapularis, Teres Major)

Extend your arm out in front of you and continuously rotate your entire shoulder inward, letting the arm sweep through its full internal range of motion. Keep your wrist still — the rotation should come entirely from the shoulder joint. The gyroscopic resistance loads the anterior rotator cuff muscles responsible for inward shoulder drive.

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