Videos (8)
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Coach Dinoffer will have you breaking some sweat doing this exercise.
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This is a great drill for tennis players, even involving a tennis racquet.
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Do you feel crunches are too easy for you? Why not try the 90-degree variation.
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Coach Joe Dinoffer shows you another great exercise to improve your core strength.
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This last abdominal exercise may not turn you into a superman, but it might just give you abs of steel.
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Joe Dinoffer shows a great exercise that isolates the lower back muscles.
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Joe Dinoffer goes quickly over the best way to do crunches.
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This is a great abdominal building exercise.
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