Seated Bent-Over One-Arm Dumbbell Triceps Extension

Muscles worked

Main muscles
- Anconeus
What it is
This is an isolation exercise performed seated and bent over, using a single dumbbell. You'll extend your arm to effectively target and strengthen the triceps in the back of your upper arm.
Technique tips
- Maintain a straight back and keep your head up throughout the movement.
- Keep your upper arm stationary, close to your torso, and parallel to the floor.
- Begin with a 90-degree angle between your forearm and upper arm.
- Focus on moving only your forearm to extend the dumbbell.
- Exhale as you extend the weight, then inhale while lowering it slowly.
- Concentrate on feeling the triceps work with each repetition.
How to track your progress
Log the weight and reps of each set. Straddly turns every set into an estimated one-rep max, so a heavier single and a strong set of eight both count as progress, and it flags a personal record the moment you beat your best.