DX Pow3r Ball The DX Pow3r Ball from Beard is designed to improve your juggling technique. Through the use of heavier weights you get used to throwing the ball with more precision and control, which results in better control of normal juggling balls. The main advantage is that you train the muscles that are used for juggling and can effortlessly juggle longer after having used the DX Pow3r balls. The principle is similar to foot weights for jogging and wrist weights for martial arts. Warning: Because of the extra strain on muscles and tendons you could injure yourself if you juggle improperly or too long. If you feel the slightest pain when juggling the DX Pow3r balls, you should immediately stop juggling them! We recommend a maximum of 30 minutes a day with a pause of 30 minutes before juggling normal balls. We also suggest that you use them at the most every other day, to give the muscles a chance to recover and grow.