Box Jump

The box jump is a vertical jump onto a raised platform, usually a stackable plyo box in the 18-36 inch range. The goal is maximum takeoff velocity — the jump is a tool to train rate of force development, not maximum jump height. The box exists primarily to give the lifter a landing surface that reduces the eccentric impact on the knees and hips compared to jumping onto flat ground and absorbing at the bottom. The higher the box, the more the athlete has to tuck the knees into the landing rather than producing additional upward velocity, which is why setting a box too high actually trains a less useful movement pattern.

Programming box jumps is a small dose by volume. Most strength coaches prescribe 3-5 sets of 3-5 reps, with ample rest (60-90 seconds between sets) to ensure every jump is near-maximal. Treating box jumps as a conditioning tool with 30-second rest intervals defeats the power-development purpose — the jumps get slower, which is the opposite of what the exercise should train. In powerlifting and strongman programming, box jumps typically appear once a week as a CNS primer before a heavy squat or deadlift session, or in the early phases of a meet peak.

Setup and height selection matter. Box height should be one the athlete can clear with a fast, aggressive takeoff and land in a partial squat — not a deep knees-to-chest tuck. For most intermediate strength athletes, a 20-24 inch box is appropriate starting out, progressing to 30+ inches only when the takeoff remains fast at lower heights. Athletes who want to chase max box height as a feat of mobility and jumping technique can do so, but that is a separate skill from power training and should be programmed separately.

In LiftProof, box jumps are tracked as an accessory lift with box height as the load variable. Track sets, reps per set, box height, and whether the jump was stepped off the box (safer for knees) or jumped off (higher eccentric demand, more fatigue). Most strength athletes should step down between reps, not jump down — the Achilles and patellar tendon stress from jumping down stacks across sets and can lead to tendinopathy over time, especially in lifters over 35 or lifters carrying significant bodyweight.

• Start with feet hip-width, knees soft, arms back
• Countermovement: quick dip of the hips and arms
• Drive hips forward and arms up explosively — jump for speed, not height
• Land in a partial squat with feet flat on the box
• Step down between reps, do not jump down

• Picking a box that is too tall — the jump becomes a knee-tuck, not a power movement
• Jumping down between reps — stacks eccentric stress on the knees and Achilles
• Treating it as conditioning — short rest intervals degrade every jump's power output
• Soft landing with the knees collapsing inward — valgus landing is a common injury pattern
• Running high-volume sets (12-20 reps) — defeats the explosive training purpose

• squat→
• kettlebell swing→
• bulgarian split squat→
• broad jump→
• depth jump→