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  7. Sitting Punch Knee Tap On A Padded Stool

Exercise guide

Sitting Punch Knee Tap On A Padded Stool

  • Beginner
  • Compound
  • Timed hold
  • Shoulders
  • Upper arms
  • Waist

This seated compound movement builds core stability and coordination by combining a knee tuck with a cross-body punch to engage the obliques, deltoids, and hip flexors. It is an excellent low-impact option for developing functional core strength and upper body endurance.

Reviewed by the Crucible team · Updated June 2026

Watch the Sitting Punch Knee Tap On A Padded Stool demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Obliques

Secondary

  • Biceps
  • Forearms
  • Serratus anterior

Equipment

  • Body weight

Setup

  1. Sit upright on the edge of a padded stool or step with feet flat on the floor, hip-width apart.
  2. Engage your core to maintain a tall, neutral spine without leaning back against a support.
  3. Bring your hands to a 'guard' position near your chin with elbows tucked in.

How to do it

  1. Simultaneously lift your right knee toward your chest while throwing a straight punch with your left hand toward the rising knee.
  2. Exhale forcefully on the punch and knee lift, rotating your torso slightly to engage the obliques.
  3. Inhale as you return the foot to the floor and the hand to the starting guard position with control.
  4. Alternate sides immediately, lifting the left knee and punching with the right hand at a steady, rhythmic tempo.

Form checklist

  • Maintain a tall posture; do not round your lower back or slouch as the knee rises.
  • Rotate through the midsection rather than just moving the arms across the body.
  • Keep the planted foot firmly pressed into the floor to maintain stability on the stool.
  • Ensure the punch is controlled and fully extended without locking the elbow joint.

Pro tips

  • Think about 'shortening' the distance between your ribcage and hip bone during the rotation for maximum oblique activation.
  • Snap the punch out and pull it back quickly to the guard position to increase the demand on the deltoids and triceps.

Make it harder

  • Hold light dumbbells or weighted gloves to increase the resistance on the shoulders and arms.
  • Perform the movement with a faster tempo to turn the exercise into a seated cardio-core interval.

Frequently asked

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

Related exercises

  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals
  • Alternate Knee Raise Side ReachBeginner · abs, deltoids, and obliques
  • Band Half Kneeling ChopIntermediate · abs, deltoids, and obliques
  • Battling Ropes Half KneelingIntermediate · abs, biceps, deltoids, obliques, and pectorals

Train this with a plan, not guesswork

Crucible builds the sitting punch knee tap on a padded stool into a precise program around your body, equipment, location, and time.

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