Do static (isometric) holds for serious training for strength and muscle balance: you'll want to train the extensor muscles of your hands to counteract all the squeezing you are doing when crushing grippers, for example.
Slip your fingers into the ergonomic loops, hook up a loading pin, extend your fingers, and lift the weight in this isometric movement, going for max weight, reps, or holds for time. (Loading pin and clip not included.)
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