Hinge your hips back, dropping your chest to about a 90 degree angle, with a slight bend in the elbows, raise the dumbbells up until your arms are in line with your shoulders, making sure not to arch your neck or back. Slowly return back.

Weight Recommendations:

Beginner: 3-7lbs
Intermediate: 10-30lbs
Advanced: 35-65+ lbs

*Modification: You can use the reverse fly machine