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Description
Dumbbell Skull Crusher is a powerful triceps isolation exercise performed lying on a bench using dumbbells. This exercise specifically targets the long head of the triceps to maximize posterior arm muscle development. Compared to the barbell version, independent movement of each arm helps correct muscle imbalances. Dumbbell usage provides a more natural movement angle for the wrist and elbow joints, reducing injury risk. It is a highly effective movement for mass and strength gains for intermediate and advanced athletes. When performed with a controlled negative phase, it keeps the triceps muscle under extra tension.
Step-by-Step Instructions
- 1
Lie flat on your back on a bench, holding a dumbbell in each hand with arms extended upward
- 2
Keeping your elbows stationary, slowly lower the dumbbells toward the sides of your forehead
- 3
Feel the tension in your triceps at the bottom position, don't overextend your elbows
- 4
Using triceps strength, push the dumbbells back to the starting position in a controlled manner
- 5
Keep your upper arms stationary throughout the movement, only your forearms should move
Key Points
- ✓Lie supine on the bench, hold dumbbells with neutral grip overhead
- ✓Elbows should remain stationary, only the forearm should move
- ✓Lower dumbbells toward the sides of the forehead in a controlled manner, not behind the head
- ✓Keep elbows slightly inward, don't fully extend them
- ✓Arms should not be vertical but slightly angled back (85-80 degrees)
Common Mistakes
- ✗Opening elbows too wide - shoulders engage and injury risk increases
- ✗Lowering the weight enough to drop it on the forehead - can be dangerous
- ✗Using too much weight and moving elbows - triceps isolation is compromised
- ✗Keeping arms completely vertical - reduces tension on the triceps
Breathing
Inhale as you lower the dumbbells, exhale as you lift them up. Maintain controlled and rhythmic breathing.
Muscle Activation
Safety
Precautions
- Those with elbow joint injuries should avoid this exercise
- Those with shoulder problems should be cautious
- Those at risk of herniated disc should use back support
- Those with dizziness or balance problems should be cautious
Safety Tips
- Don't bring the weight over your head, keep it aligned with your forehead
- Be slow when opening elbows, don't lose control
- Keep your back fixed on the bench
- Start with light weight and prioritize form
Frequently Asked Questions
Which muscles does Dumbbell Skull Crusher work?
Dumbbell Skull Crusher primarily works these muscles: Triceps. It also engages: Shoulders.
Is Dumbbell Skull Crusher suitable for beginners?
Dumbbell Skull Crusher is a Intermediate level exercise. Learning difficulty: Moderate.
Can Dumbbell Skull Crusher be done at home?
Yes, Dumbbell Skull Crusher can easily be done at home.
What are common mistakes when doing Dumbbell Skull Crusher?
One of the most common mistakes: Opening elbows too wide - shoulders engage and injury risk increases
How many sets and reps for Dumbbell Skull Crusher?
Recommended: 3-4 sets and 8-12 reps.
Exercise Information
Equipment
Primary Muscles
Secondary Muscles
Benefits
- ✓Effectively targets the long head of the triceps
- ✓Prevents muscle imbalances by working both arms independently
- ✓Strengthens elbow joint stability
- ✓Increases arm mass and hypertrophy