Exercise guide
Dumbbell Decline One Arm Hammer Press
- Intermediate
- Compound
- Rep-based
- Chest
- Shoulders
- Upper arms
- Waist
This unilateral compound movement targets the lower pectoral fibers and triceps while challenging core stability to prevent rotation on the decline bench. The neutral hammer grip reduces shoulder strain and emphasizes the triceps and sternal head of the chest.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Set a bench to a decline of 15 to 30 degrees and secure your feet firmly under the leg pads.
- Lie back on the bench with a dumbbell in one hand, held at chest level with a neutral grip (palm facing inward).
- Press the dumbbell up to the starting position directly over your lower chest.
- Place your non-working hand on your hip or the side of the bench to help stabilize your torso.
How to do it
- Inhale as you slowly lower the dumbbell toward the side of your lower chest, keeping your elbow tucked at a 45-degree angle to your body.
- Lower the weight with a controlled 2-3 second tempo until you feel a stretch in the chest and the dumbbell is near chest level.
- Exhale as you press the dumbbell back to the starting position by contracting the chest and extending the tricep.
- Complete the full set on one side before switching to the other to address strength imbalances.
Form checklist
- Keep your wrist neutral and stacked directly over your elbow throughout the entire range of motion.
- Engage your core to prevent your torso from rotating or tilting toward the weighted side.
- Keep your shoulder blades retracted and pinned firmly against the bench pad.
- Ensure the dumbbell travels toward the lower chest/sternum rather than the upper chest or neck.
Pro tips
- Focus on driving the bicep of the working arm toward the center of your chest at the top of the rep for a peak contraction.
- Grip the bench tightly with your non-working hand to create total-body tension and improve force production on the pressing side.
Make it harder
- Incorporate a 2-second pause at the bottom of each rep to remove the stretch reflex and increase difficulty.
- Slow the eccentric (lowering) phase to 4-5 seconds to maximize time under tension for the lower pectorals.
Frequently asked
- What muscles does the dumbbell decline one arm hammer press work?
- The dumbbell decline one arm hammer press primarily targets the pectorals, and also works the abs and serratus anterior as secondary muscles.
- What equipment do you need for the dumbbell decline one arm hammer press?
- The dumbbell decline one arm hammer press uses dumbbell.
- Is the dumbbell decline one arm hammer press good for beginners?
- The dumbbell decline one arm hammer press is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.