Triceps · Dumbbell

Single-Arm Dumbbell Tricep Extension

One dumbbell overhead, deep stretch, full triceps lockout.

Single-Arm Dumbbell Tricep Extension exercise demonstration
TricepsDumbbell

How to do it

  1. Stand or sit holding one dumbbell overhead, arm fully extended.
  2. Keep your upper arm vertical and close to your head.
  3. Bend your elbow to lower the dumbbell behind your head.
  4. Extend back up to a full lockout, then repeat before switching arms.

The one cue that matters

Keep your elbow pointing at the ceiling and tucked in, don't let it flare out.

Muscles worked

The Single-Arm Dumbbell Tricep Extension isolates the Triceps — no passengers. That makes it a clean tool for adding targeted triceps volume without extra fatigue.

FAQ

What muscles does the Single-Arm Dumbbell Tricep Extension work?

The Single-Arm Dumbbell Tricep Extension primarily works the Triceps.

How heavy should I go?

Pick a weight where you finish each set with 1 to 2 clean reps left in the tank. Own the top of your rep range before adding weight.

One side at a time?

Yes, it's a unilateral movement. Start with your weaker side and match the reps with your stronger side so no side gets ahead.

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