Waiter Curl (Dumbbell)

The Waiter Curl is a bicep isolation exercise performed by holding a single dumbbell vertically with both hands. It specifically targets the bicep peak and improves grip strength through a unique narrow holding position.

Exercise movement reviewed by:Marie Braga, PT, DPT, CSCS
How Iridium Helps

Since the Waiter Curl relies heavily on a specific grip and wrist position, our AI analyzes your performance data to ensure grip fatigue isn't limiting your bicep stimulation. By tracking your RPE and recovery status, the app can detect if your forearms are fatigued from previous heavy pulling days and adjust the prescribed intensity to prevent wrist strain while still ensuring you achieve the necessary volume for muscle growth.

Form Cues

Do
  • Cup the top plate of the dumbbell with both hands, palms facing up
  • Keep your elbows tucked tightly against your ribs
  • Squeeze your biceps hard at the top of the movement
  • Lower the weight slowly under full control to full extension
Don't
  • Don't let your elbows flare out to the sides
  • Don't swing your torso or lean back to lift the weight
  • Don't grip the handle of the dumbbell; hold the top weight plate
  • Don't drop the weight quickly during the lowering phase

Common Mistakes

  • Flaring elbows outward
  • Using excessive momentum to curl
  • Gripping the dumbbell handle instead of cupping the end
  • Shortening the range of motion
  • Rushing the eccentric (lowering) portion

Muscles Worked

This exercise primarily isolates the short head of the biceps brachii, which helps build the 'peak' of the arm. By holding the dumbbell vertically, you also engage the brachialis and forearm muscles to stabilize the weight, providing a comprehensive arm workout with lighter loads.

Primary

Biceps Short Head

Secondary

Forearms

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