Every muscle contraction produces an electrical signal — a millivolt whisper that tells the story of how you move. For the first time, you can hear what your body is saying during your swing.
ELECTRICAL SIGNALS
Surface EMG sensors detect the electrical potential difference generated when muscle fibers contract. The timing, amplitude, and pattern of these signals reveal everything about how you produce force.
Correct sequence: Core → Lats → Forearms
The exact moment each muscle starts to fire — within 5ms.
How hard the muscle contracts — expressed as % of maximum voluntary contraction.
When amplitude drops across sessions — the signal that you're practicing tired.
When the wrong muscle activates too early — your body hiding a weakness.
DECODING YOUR BODY
We monitor the 4 muscle groups most critical to golf's kinetic chain — chosen based on biomechanics research.
Ground push — chain initiator
Left leg · 10-15cm above patella, lateral thigh
Powers the ground reaction force that starts the kinetic chain. Weak quads = no launch pad.
Hip rotation & stability
Left side · Upper outer quadrant of buttock
Ground-up force generation. Inactive glutes = unstable base = inconsistency.
Core rotation — power hub
Left side · 2-3cm lateral to navel, below ribs
If core is weak, arms compensate. EMG reveals this instantly.
Arm pull — shoulder driver
Right side · Below inferior angle of scapula
Controls the transition from backswing to downswing. Timing is everything.
WHAT YOUR MUSCLES SAY
4 EMG sensors read the electrical language of your muscles. AI translates it into actionable coaching.
No credit card required · First consumer EMG for golf · Ships Q3 2026