The dumbbell fly low to high on an incline bench is an advanced chest exercise that targets the upper portion of the pectoral muscles. This movement involves lying on an incline bench and lifting dumbbells in an arc motion from a low to a high position, engaging the chest throughout the entire range of motion.

1. Set an incline bench to a 30-45 degree angle and lie back on it with a dumbbell in each hand.
2. Start with your arms extended down by your sides, with a slight bend in your elbows.
3. Inhale and slowly lift the dumbbells in an arc motion, keeping your elbows slightly bent, until they meet above your chest.
4. Squeeze your chest muscles at the top of the movement.
5. Exhale and slowly lower the dumbbells back to the starting position, maintaining the arc motion.
6. Repeat for the desired number of repetitions.