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  5. Legs
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  7. Alternate Knee Cross Over Sit Against Wall

Exercise guide

Alternate Knee Cross Over Sit Against Wall

  • Intermediate
  • Compound
  • Rep-based
  • Lower legs
  • Upper legs

This compound exercise builds lower body strength and stability while improving hip mobility and core engagement through a cross-body knee drive. It specifically targets the quadriceps and glutes while using the wall to ensure proper spinal alignment and vertical posture.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Alternate Knee Cross Over Sit Against Wall demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Calves
  • Glutes
  • Hamstrings
  • Quadriceps

Secondary

  • Abs
  • Obliques

Equipment

  • Body weight

Setup

  1. Stand with your back flat against a wall and your feet shoulder-width apart, positioned about 12 to 18 inches away from the base.
  2. Press your lower back and shoulder blades firmly into the wall to engage your core.
  3. Hold your arms out in front of your chest or at your sides for balance.

How to do it

  1. Inhale as you slide your back down the wall until your thighs are parallel to the floor, maintaining a 90-degree angle at the knees.
  2. Exhale and drive through your heels to stand up, simultaneously lifting your right knee up and across your body toward your left shoulder.
  3. Inhale as you return your right foot to the floor and immediately lower back into the wall squat position.
  4. Repeat the movement on the opposite side, driving your left knee across toward your right shoulder, alternating sides for the duration of the set.

Form checklist

  • Keep your back and shoulder blades in contact with the wall during the squatting phase.
  • Ensure your knees track directly over your toes and do not cave inward as you descend.
  • Maintain a braced core to prevent your lower back from arching away from the wall.
  • Keep your chest lifted and avoid leaning too far forward during the knee drive.

Pro tips

  • Focus on 'pushing the wall away' with your back as you stand to maximize quadriceps recruitment.
  • Pause for one second at the peak of the knee drive to challenge the stability and glute activation of the standing leg.

Make it harder

  • Hold a medicine ball or dumbbell at chest height to increase the resistance and core demand.
  • Slow down the descent (eccentric phase) to 3-4 seconds to increase time under tension for the quads.

Frequently asked

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

Related exercises

  • 3 Point Standing HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Cone Single Foot Lateral HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Way Single Leg HopAdvanced · calves, glutes, hamstrings, and quadriceps
  • Alternate Leg Kick Sit Against WallIntermediate · calves, glutes, hamstrings, and quadriceps

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

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