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  7. Plank Jack Slide With Towel

Exercise guide

Plank Jack Slide With Towel

  • Intermediate
  • Compound
  • Timed hold
  • Lower arms
  • Lower legs
  • Shoulders
  • Upper arms
  • Upper legs
  • Waist

This dynamic plank variation combines core stability with hip abduction, targeting the abdominals and obliques while challenging the shoulders and glutes through a low-impact sliding motion.

Reviewed by the Crucible team · Updated June 2026

Watch the Plank Jack Slide With Towel demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Obliques

Secondary

  • Calves
  • Hamstrings
  • Quadriceps

Equipment

  • Body weight

Setup

  1. Place a small towel or slider under each foot on a smooth floor surface (hardwood or tile).
  2. Assume a high plank position with your hands stacked directly under your shoulders.
  3. Position your feet together and engage your glutes to create a straight line from head to heels.

How to do it

  1. Inhale and slide both feet out simultaneously into a wide 'V' position while keeping your torso perfectly still.
  2. Exhale and use your inner thighs and core to slide your feet back together to the starting position.
  3. Maintain a controlled tempo, focusing on smooth movement rather than momentum.
  4. Keep your arms locked and your weight distributed evenly across your palms.

Form checklist

  • Keep your hips level with your shoulders; do not let them sag or pike upward.
  • Maintain a neutral neck by looking at the floor about 6 inches in front of your hands.
  • Ensure your shoulders stay directly over your wrists throughout the entire slide.
  • Keep your core braced as if someone is about to punch you in the stomach.

Pro tips

  • Focus on 'pulling' the floor together with your legs during the inward phase to maximize lower abdominal and adductor engagement.
  • Press actively through your hands to protract your shoulder blades, which better engages the serratus anterior and stabilizes the upper body.

Make it harder

  • Perform the movement from a forearm plank position to decrease your base of support and increase core demand.
  • Add a 'tuck' by sliding both knees toward your chest between every three plank jack slides.

Frequently asked

What muscles does the plank jack slide with towel work?
The plank jack slide with towel primarily targets the abs, deltoids, and obliques, and also works the calves, hamstrings, and quadriceps as secondary muscles.
What equipment do you need for the plank jack slide with towel?
The plank jack slide with towel requires no equipment — just your body weight.
Is the plank jack slide with towel good for beginners?
The plank jack slide with towel is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals
  • Bosu Ball Plank HoldIntermediate · abs, deltoids, obliques, and pectorals
  • Explosive Dynamic PlankIntermediate · abs, deltoids, obliques, and pectorals
  • Front Plank Against WallIntermediate · abs, deltoids, and obliques

Train this with a plan, not guesswork

Crucible builds the plank jack slide with towel into a precise program around your body, equipment, location, and time.

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