One Dumbbell Triceps Extension: How to Do It & Muscles Worked

How to Do It Step-by-Step

  • Stand or sit upright on a bench. Hold a dumbbell with one hand and use your other hand to support your arm if needed.
  • Lift the dumbbell overhead, palms facing up, and lower it carefully behind your head.
  • Keep your elbows steady and extend your arm fully upwards, feeling the triceps work.
  • Lower the dumbbell in a slow, controlled motion behind your head again. Do not let your elbows flare outward.
  • Keep your back straight. Only your elbows should bend and extend; avoid moving your shoulders.
  • Pick a weight that allows for proper control and smooth movement.

What Muscles Does It Work?

  • Triceps Brachii
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