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Dumbbell Decline Single-Arm Hammer Press

Intermediate

A unilateral dumbbell press on a decline bench with neutral grip that targets the lower chest and anterior deltoids for strength and hypertrophy; improves core stability and unilateral balance.

About Exercise

Equipment

Dumbbells, Decline Bench

Difficulty

3/5 • Intermediate

Primary Muscle Groups

Chest

Secondary Muscles

Triceps, Abs, Obliques

Popularity Score

5

Goals

Strength
Hypertrophy
Stability

Training Style

Bodybuilding
Functional Training

Setup Requirements

Requires Rack

No

Requires Bench

Yes

Requires Spotter

No

Space Needed

Small

Noise Level

Low

Muscle Breakdown

Chest

10/10

Lower Chest

Shoulders

7/10

Anterior Delts

Triceps

5/10

Lateral Head, Medial Head

Abs

4/10

Rectus Abdominis

Obliques

3/10

External Obliques

Programming

Typical Rep Range

8-15 reps

Rest Between Sets

60-90 seconds

How to Perform

Adjust decline bench to 15-30 degrees and secure feet under pads. Lie back with one dumbbell held in neutral grip above lower chest, non-working hand on torso for support.

  1. Inhale and lower dumbbell toward side of lower chest, keeping elbow at 45 degrees to body.
  2. Bend elbow to 90 degrees for stretch without losing control.
  3. Exhale and press dumbbell straight up to full arm extension.
  4. Squeeze chest at top without locking elbow.
  5. Maintain core tight to prevent torso rotation.
  6. Switch sides after completing reps on one arm.

Coaching Tips

Form Cues

  • Elbows tucked at 45 degrees
  • Core tight, no rotation
  • Neutral grip throughout
  • Press in straight line
  • Squeeze lower chest
  • Feet planted firmly

Breathing

Inhale during the lowering phase and exhale forcefully while pressing up, bracing core throughout.

Tempo

3-1-1

Range of Motion

Lower until elbow forms 90-degree angle with mild chest stretch; press to full arm extension above chest without elbow lockout.

Safety

Safety Notes

  • Start with moderate weight to master form
  • Avoid excessive decline angle to prevent shoulder overload
  • Engage core to protect spine
  • Use spotter for heavy dumbbells during setup
  • Stop if shoulder pain occurs
  • Secure feet to maintain stability

Spotting

Recommended for heavy sets; spotter assists with handing/retrieving dumbbell from thigh and supports arm if needed during failure.

Common Mistakes

  • Allowing torso to rotate
  • Flaring elbows wide
  • Locking elbows at top
  • Using momentum to press
  • Overarching lower back
  • Dropping dumbbell too fast

When to Avoid

  • Acute shoulder impingement
  • Recent rotator cuff injury
  • Lower back strain

Flexibility Needed

  • Shoulder flexion to 120 degrees
  • Adequate thoracic mobility

Build Up First

  • Mastery of basic dumbbell bench press
  • Core stability competency
  • Neutral grip familiarity

Also known as

Single-Arm Decline Dumbbell Hammer Press, Decline One-Arm Neutral Grip Press, Unilateral Decline Hammer Chest Press

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