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  7. Assault Bike Run

Exercise guide

Assault Bike Run

  • Intermediate
  • Compound
  • Timed hold
  • Upper arms
  • Waist

This full-body metabolic exercise mimics the mechanics of an air bike, utilizing a rhythmic squat-and-drive pattern to engage the entire posterior chain, core, and upper body. It is highly effective for cardiovascular conditioning and total-body muscle endurance without the need for equipment.

Reviewed by the Crucible team · Updated June 2026

Watch the Assault Bike Run demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Calves
  • Glutes
  • Hamstrings
  • Quadriceps

Secondary

  • Erector spinae
  • Obliques

Equipment

  • Body weight

Setup

  1. Stand with your feet shoulder-width apart and your toes pointing slightly outward.
  2. Engage your core and keep your chest upright with your gaze forward.
  3. Bend your elbows to 90 degrees, holding your hands in loose fists near your ribs as if gripping handles.

How to do it

  1. Lower your hips into a shallow squat position to load your glutes and quadriceps.
  2. Explosively drive one knee toward your chest while simultaneously punching the opposite arm forward and pulling the other elbow back.
  3. Immediately switch sides in a fluid, alternating 'running' motion while maintaining a slight squat depth throughout.
  4. Breathe rhythmically, exhaling sharply with every knee drive to maintain high intensity and core stability.

Form checklist

  • Keep your spine neutral and avoid rounding your shoulders forward during the arm drive.
  • Land softly on the balls of your feet to minimize joint impact.
  • Ensure your knees stay aligned with your toes and do not cave inward during the squat phase.
  • Maintain a high, consistent cadence while keeping your chest lifted.

Pro tips

  • Focus on a powerful 'push-pull' arm action; imagine you are moving through water to maximize lat and pectoral activation.
  • Keep your core braced throughout the movement to transfer power efficiently between your upper and lower body.

Make it harder

  • Increase the depth of the squat between each stride to increase the demand on the glutes and quads.
  • Hold light dumbbells or weighted gloves to significantly increase the resistance for the deltoids and arms.

Frequently asked

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

Related exercises

  • Barbell Power JerkAdvanced · adductors, calves, deltoids, glutes, hamstrings, and quadriceps
  • Barbell Snatch From BlocksAdvanced · adductors, calves, glutes, hamstrings, lats, quadriceps, serratus anterior, and trapezius
  • Burpee Jump BoxAdvanced · calves, glutes, hamstrings, and quadriceps
  • Burpee Over The DumbbellIntermediate · calves, glutes, hamstrings, and quadriceps

Train this with a plan, not guesswork

Crucible builds the assault bike run into a precise program around your body, equipment, location, and time.

Download on the App Store