Dumbbell Lying One Arm Supinated Triceps Extension

Lie flat on a bench holding a dumbbell in one hand with your palm facing up. Extend your arm straight above your shoulder. Keep your upper arm still as you slowly bend your elbow to lower the dumbbell toward your forehead or slightly beside your head. Pause briefly, then extend your arm back to the starting position by contracting your triceps. Perform the movement in a controlled manner and switch arms after completing your reps.

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