One start-up is betting its training gear will be a game changer for athletes.
"Over the last five to 10 years there has been a lot of focus on pure athletic ability and not nearly as much of a focus on skill development," said Darnell Jones, a former professional basketball player.
So Jones and his wife Danyel founded Powerhandz, an e-commerce start-up selling products designed to improve an athlete's dexterity and hand strength in sports like basketball, baseball and football.
Darnell's idea for Powerhandz evolved from his own homemade training tools. "I would dribble a basketball with gardening gloves and wrist weights, which made my ball handling drills extremely difficult because it stripped me of my dexterity as well as added weight resistance to my hands and arms," he told CNBC.