One Arm Flat Bench Dumbbell Flye

Like a careful bear spreading one paw wide, this move has you open and close one arm over the bench. It zeroes in on the chest while your shoulder and core work to keep the whole cave steady.

Instructions

1. Lie on a flat bench holding one dumbbell above your chest.
2. Plant your feet firmly and brace your core.
3. Lower the dumbbell out to the side with a soft elbow.
4. Stop when your chest feels a strong stretch.
5. Raise the dumbbell back above your chest in a wide arc.
6. Repeat for reps, then switch arms.

Benefits

• Builds chest strength one side at a time
• Helps even out left-right strength gaps
• Improves control during pressing movements
• Adds variety to upper-body training

Key Points

• Keep a slight bend in your elbow
• Move in a wide hugging arc
• Keep your shoulders level
• Brace your core throughout
• Use controlled, even tempo

Common Mistakes

• Bending the elbow too much
• Dropping the weight too low
• Twisting the torso on the bench
• Rushing the lowering phase
• Using too much weight