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  5. Legs
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  7. Single Leg Box Jump

Exercise guide

Single Leg Box Jump

  • Intermediate
  • Compound
  • Timed hold
  • Lower legs
  • Upper legs

This advanced plyometric exercise develops explosive unilateral power, balance, and coordination by targeting the glutes and quads through a high-velocity concentric contraction.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Single Leg Box Jump demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Calves
  • Glutes
  • Hamstrings
  • Quadriceps

Secondary

  • Abs
  • Hip flexors
  • Obliques

Equipment

  • Body weight

Setup

  1. Stand facing a sturdy box or platform at a height you can comfortably clear with one leg.
  2. Balance on your target leg with a slight bend in the knee, holding the non-working leg behind or beside you.
  3. Position your arms at your sides, ready to swing for momentum.
  4. Ensure your standing foot is hip-width distance from the box.

How to do it

  1. Hinge slightly at the hip and swing your arms back to load the posterior chain.
  2. Explosively drive through the mid-foot and swing your arms forward to jump onto the box, exhaling sharply on the ascent.
  3. Land softly on the center of the box with a slightly bent knee to absorb the impact quietly.
  4. Stand tall to complete the rep, then carefully step down one foot at a time to reset.

Form checklist

  • Land softly and quietly to ensure joint safety.
  • Keep the knee of the jumping leg tracking over the toes; do not let it cave inward.
  • Maintain a neutral spine and engaged core throughout the entire movement.
  • Focus on vertical extension rather than just pulling your foot up to clear the edge.

Pro tips

  • Achieve 'triple extension' by fully extending the hip, knee, and ankle simultaneously at the peak of the jump.
  • Use your arms aggressively to generate upward momentum and stabilize your flight path.
  • Fix your gaze on the center of the box before jumping to improve spatial awareness and landing accuracy.

Make it harder

  • Increase the box height incrementally to challenge explosive capacity.
  • Perform the jump from a seated position on a lower bench to remove the stretch-shortening cycle advantage.

Frequently asked

What muscles does the single leg box jump work?
The single leg box jump primarily targets the calves, glutes, hamstrings, and quadriceps, and also works the abs, hip flexors, and obliques as secondary muscles.
What equipment do you need for the single leg box jump?
The single leg box jump requires no equipment — just your body weight.
Is the single leg box jump good for beginners?
The single leg box jump 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 Knee Cross Over 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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