Dumbbell Standing One Arm Extension

Hold a dumbbell in one hand. Stand with your feet shoulder-width apart. Extend your arm straight up over your head. Lower the dumbbell back down behind your head and then lift it back up to the starting position. Repeat on the opposite arm.

How to perform the Dumbbell Standing One Arm Extension

  1. Set up. Set up in a stable, balanced starting position appropriate for the Dumbbell Standing One Arm Extension using your dumbbell.
  2. Brace and execute. Brace your core, control the descent, and move through a full pain-free range of motion while emphasizing your triceps.
  3. Reset. Reverse the movement under control and reset between repetitions, keeping your form crisp on every rep.

Coaching cues

  • Move with intent — every rep should feel deliberate, not rushed.
  • Drive force through your triceps rather than momentum.
  • Keep your breathing steady: exhale on the hard part, inhale on the reset.

Common mistakes

  • Using too much weight and losing positional control.
  • Cutting the range of motion short and missing the target muscle.
  • Letting your spine round or hyperextend instead of staying neutral.

Detailed cues, common mistakes, and demonstration video are available in the Fitly app.

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