Skip to content
Crucible
Download on the App Store
Crucible

Crucible is a precision strength training system built around your body, your equipment, your location, and your time.

Download on the App Store

© 2026 Crucible Fit, LLC. All rights reserved.

Explore

  • Exercise Library

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

Support

  • Support
  1. Home
  2. /
  3. Exercises
  4. /
  5. Back
  6. /
  7. Spider Crawl

Exercise guide

Spider Crawl

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

The Spider Crawl is a dynamic, full-body movement that builds core stability, hip mobility, and upper body endurance by mimicking a low-profile crawling motion. It specifically targets the obliques through lateral trunk flexion while challenging the shoulders and chest to support the body's weight.

Reviewed by the Crucible team · Updated June 2026

Watch the Spider Crawl demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Obliques
  • Pectorals

Secondary

  • Biceps
  • Forearms
  • Serratus anterior
  • Triceps

Equipment

  • Body weight

Setup

  1. Start in a high plank position with your hands directly under your shoulders and feet hip-width apart.
  2. Engage your core and glutes to create a straight line from your head to your heels.
  3. Lower your center of gravity slightly by softening your elbows, preparing to move in a low-profile stance.

How to do it

  1. Simultaneously move your right hand forward while bringing your left knee toward the outside of your left elbow.
  2. Exhale as you crunch your knee toward your elbow, keeping your hips as low to the ground as possible.
  3. Step forward with your left hand and bring your right knee toward your right elbow in a fluid, alternating crawling motion.
  4. Maintain a slow and controlled tempo, focusing on stability rather than speed.

Form checklist

  • Keep your hips low and parallel to the floor throughout the entire movement.
  • Ensure your knee tracks outside of your arm, not underneath your chest.
  • Maintain a neutral spine by looking at the floor slightly ahead of your hands.
  • Avoid letting your lower back arch or your hips pike upward as you fatigue.

Pro tips

  • Visualize crawling under a very low ceiling to force your body to stay low and maximize quad and shoulder tension.
  • Focus on the 'side-crunch' sensation in your obliques every time your knee reaches toward your elbow.

Make it harder

  • Perform a 'Spider Push-up' by lowering your chest to the floor every time you bring a knee forward.
  • Wear a weighted vest to increase the resistance on the shoulders, chest, and core.

Frequently asked

What muscles does the spider crawl work?
The spider crawl primarily targets the abs, deltoids, obliques, and pectorals, and also works the biceps, forearms, serratus anterior, and triceps as secondary muscles.
What equipment do you need for the spider crawl?
The spider crawl requires no equipment — just your body weight.
Is the spider crawl good for beginners?
The spider crawl is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • Knee Tap Sky ReachIntermediate · abs, calves, deltoids, obliques, and pectorals
  • Alternate Front Kick In Place With Arm CirclesBeginner · abs, calves, deltoids, and pectorals
  • InchwormIntermediate · abs, hamstrings, obliques, pectorals, and trapezius
  • Kettlebell Half Turkish Get-UpIntermediate · abs, deltoids, and obliques

Train this with a plan, not guesswork

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

Download on the App Store