Real time biofeedback from athletes is popping up everywhere. From heart rate monitors to electrolyte sensors, there’s a push to know what’s happening inside the body. For each sensor, a good ‘connection’ to the body is critical for obtaining accurate data but that often requires that something be stuck to the athlete. Now, a new technology developed by ConText, a European research collaboration, hopes to monitor EMG signals without attaching to, or getting under, an athlete’s skin.