Body By O Coach Kim Oddo breaks down the importance of proper form using dumbbells flys to build the upper chest. Follow Kimbo as IFBB Bikini Pro Skylar Lanier demonstrates using a lighter weight to focus on the muscle with a slight bend to the elbows coming down to parallel. To choose the proper weight, the last 3-4 reps you should really start to feel it start to burn. Never sacrifice your form to go heavier.