Frequent exercise with dumbbells – weights can burden the tendons of the fingers of the hand and the wrist due to their constant effort – to reduce the slip of the dumbbell. This can lead to tendon injuries – epicondylitis, or carpal tunnel syndrome (nerve entrapment syndrome). The use of Graps® balances the forces of the dumbbell on the forearm – elbow – arm – shoulder, improving the biomechanics of the movement, reducing the chance of injury and perfecting the performance of the exercise.