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Box Jump — CrossFit Technique Guide

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By Borja Bes — CrossFit Athlete & Hyrox Finisher

The box jump is a plyometric movement that develops explosive lower-body power, coordination, and the ability to absorb impact safely. In CrossFit, box jumps are performed to standard heights of 24 inches (men) and 20 inches (women) and require the athlete to reach full hip and knee extension (standing tall) at the top of the box. Box jumps appear in benchmark workouts and Hero WODs as a power-based conditioning tool. Step-downs between reps are encouraged for safety — the Achilles tendon ruptures that have occurred in CrossFit are almost always from rebounding (jumping back down rapidly).

Quick answer

The box jump is a plyometric movement that develops explosive lower-body power, coordination, and the ability to absorb impact safely. Use repeatable sets of Box Jump and scale before breathing speed causes range of motion or control to disappear.

Curated demonstration

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Box Jump Mechanics: Help Athletes Master Their Takeoff and Landing for Better Performance

CrossFit · reviewed 2026-08-06

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Muscles Worked

QuadricepsGlutesCalvesHip flexors

Equipment

Plyo box

Best For, Avoid If, and Scaling

Best forBox Jump conditioning when the goal is repeatable output through quadriceps and glutes, with a version that matches the athlete's current capacity.
Avoid ifAvoid or scale Box Jump if pain changes the movement or the intended position cannot be controlled. Correct this common fault before adding volume: not reaching full extension at the top — a common shortcut; judges will no-rep it.
ScalingStep-ups (step one foot, then the other), lower box height, box jumps with step-down.

How to Do the Box Jump

1

Stand facing the box, feet hip-width apart, arms at sides.

2

Dip into a quarter squat and swing arms back, then explosively extend hips, knees, and ankles.

3

Pull knees up and land softly on the box with both feet, hips above knees.

4

Stand to full hip and knee extension at the top.

5

Step down one foot at a time (recommended) or jump down with control.

6

Reset and repeat.

Common Mistakes

Not reaching full extension at the top — a common shortcut; judges will no-rep it.

Rebounding off the box — jumping down rapidly increases Achilles tendon rupture risk significantly.

Landing with excessive forward lean or soft knees that collapse inward.

Coaching Tips

Step-downs can be a controlled alternative when rebounding is not appropriate for your experience or current capacity.

Box height should allow a two-inch clearance — if you are barely making it, drop the height.

Scaling Options

Easier / Beginner

Step-ups (step one foot, then the other), lower box height, box jumps with step-down.

Harder / Advanced

Higher box, weighted box jumps (light vest), box jump overs.

Training Examples

Train Box Jump with a Clear Purpose

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Box Jump Repeatable AMRAP

box jump wod

AMRAP 12

6-10 box jumps

8 controlled air squats

Keep every round within a consistent pace

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Box Jump Conditioning Intervals

box jump conditioning

Every 3:00 x 6 rounds

6-10 box jumps

8 controlled bodyweight reps

Rest for the remainder; avoid a first-round sprint

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Frequently Asked Questions

Should I rebound or step down from box jumps in CrossFit?

Step-downs reduce repeated rebound demand and are a sensible choice for many training sessions. Rebounding requires experience, consistent landing mechanics and appropriate volume; ask a qualified coach when unsure.

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