Flat Dumbbell Chest Press

1. Engage your core and slightly arch your lower back to drive your upper back into the bench.

2. With elbows slightly tucked inward, press the dumbbells up so your arms are directly over your shoulders and your palms are facing up.

3. Slowly return the weight back to the starting position.  

Pro tip: Don't lock your elbows at the top, keep them slightly bent to keep constant tension on your chest muscles.