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  7. Shoulder Tap

Exercise guide

Shoulder Tap

  • Beginner
  • Compound
  • Rep-based
  • Chest
  • Shoulders
  • Waist

The shoulder tap is a foundational anti-rotation core exercise that builds exceptional stability in the obliques and shoulders by challenging your ability to remain perfectly still while removing a point of contact.

Reviewed by the Crucible team · Updated June 2026

Watch the Shoulder Tap demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Obliques

Secondary

  • Serratus anterior

Equipment

  • Body weight

Setup

  1. Start in a high plank position with your hands placed directly under your shoulders.
  2. Position your feet slightly wider than hip-width apart to create a stable base of support.
  3. Engage your core and squeeze your glutes to create a straight line from your head to your heels.

How to do it

  1. Shift your weight slightly onto your left hand and lift your right hand to tap your left shoulder.
  2. Exhale as you tap, focusing on keeping your hips and shoulders perfectly square to the floor.
  3. Inhale as you return your hand to the starting position with control.
  4. Repeat the movement on the opposite side, alternating back and forth at a steady, controlled tempo.

Form checklist

  • Keep your hips level; do not let them rock or tilt as you lift your hand.
  • Maintain a neutral neck by looking at a spot on the floor about 6 inches in front of your hands.
  • Keep your elbows slightly soft to avoid locking out the joint.
  • Ensure your hands return to a position directly under your shoulders every time.

Pro tips

  • Imagine there is a glass of water resting on your lower back that you cannot spill to ensure zero hip rotation.
  • Actively push the floor away with your grounded hand to maximize serratus anterior activation and shoulder stability.

Make it harder

  • Bring your feet closer together to decrease your base of support and increase the stability challenge.
  • Slow down the tempo, pausing for 2-3 seconds at the top of the tap to maximize time under tension.

Frequently asked

What muscles does the shoulder tap work?
The shoulder tap primarily targets the abs, deltoids, and obliques, and also works the serratus anterior as secondary muscles.
What equipment do you need for the shoulder tap?
The shoulder tap requires no equipment — just your body weight.
Is the shoulder tap good for beginners?
Yes. The shoulder tap is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • Bear WalkIntermediate · abs, calves, deltoids, hamstrings, obliques, and pectorals
  • Boxing Cross Hook CrossIntermediate · abs, calves, deltoids, obliques, pectorals, and quadriceps
  • Boxing Full Uppercut With Bag And GlovesIntermediate · abs, deltoids, obliques, pectorals, and triceps
  • Boxing Full Uppercut With DumbbellIntermediate · abs, deltoids, obliques, pectorals, and triceps

Train this with a plan, not guesswork

Crucible builds the shoulder tap into a precise program around your body, equipment, location, and time.

Download on the App Store