Get a grip on grip… before it’s too late! Hand & Grip Strength - EXPERT Dr. Terry Zachary is the author of ‘Great Hands, Great Life!’ and the inventor of the Handmaster Plus Hand Exercise System. He is a former professional golfer and sports chiropractor that saw dozens of repetitive grip injuries to the fingers, thumb, hand, wrist, carpal tunnel and elbow. Dr. Zachary has since helped 100’s of thousands of people to exercise their hands properly and ‘get grip right’ in therapy, sports, music, workplace, gaming, hobby & smartphone users.