Sit on a stability ball facing away from a cable machine with handles set at chest height. Walk your feet forward until your upper back is supported on the ball and your hips are lifted. Hold the cable handles at chest level with elbows bent about 90°. Brace your core and keep your body in a straight line from shoulders to knees. Press the handles forward until your arms are extended in front of your chest. Pause briefly, then slowly return under control to the starting position. Repeat for controlled reps.
Log your cable press on exercise ball sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.