How to Do a One-Arm Hammer Curl to Shoulder Press? Muscles Worked & Arm-Shoulder Power Tips

The one-arm hammer curl to shoulder press fuses biceps isolation with overhead pressing for a full upper-arm and delt blast—ideal when you only have one dumbbell or want extra core engagement.

How to Do a One-Arm Hammer Curl Shoulder Press

  • Stance: Stand tall, feet shoulder-width. Brace your core and pack your shoulder blades.
  • Hammer curl: Holding a dumbbell with a neutral grip, curl up until the weight reaches shoulder height. Palm faces inward the entire time.
  • Transition: Without dropping the elbow, rotate slightly so the dumbbell is in front of the shoulder.
  • Press: Drive the weight overhead, biceps close to ear, elbow fully extended—avoid leaning or flaring ribs.
  • Lower: Reverse the press to shoulder, then control the curl back to the start. That’s one rep.
  • Complete 8-12 reps, switch arms and repeat for 3–4 sets.
  • Tip: Exhale on the press, inhale on the way down; use a slight squeeze-pause at both the curl and overhead lockout for extra tension.

What Muscles Does It Work?

  • Biceps Brachii & Brachialis – hammer curl phase
  • Deltoids – overhead press (anterior & medial fibers)
  • Forearms & Grip – neutral hold
  • Core & Obliques – anti-side-flexion stability

Insert this combo on arm day or push day to save time, spike calorie burn and build unilateral shoulder strength.

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