Coach Charles R. Poliquin, the Strength Sensei, demonstrates the usefulness of the Havyk Dumbbell, a new tool to develop grip strength and recruit more motor unitsTo know more, please visit http://www.strengthsensei.com/Follow us on Facebook: http://www.facebook.com/strengthsenseiFollow us on Twitter: https://twitter.com/StrengthSenseiFollow us on Instagram: @strengthsensei1