The Missing Leg Exercise for Size & Athleticism

Box Step-Offs for Strong Legs

It’s time to stop working out in just two dimensions. Add some frontal plane movement and leg size with these four step-off leg exercises.


Stepping off a box shouldn’t just be reserved for your local step aerobics class. With a few upgrades, box step-offs can effectively add some frontal plane (side-to-side) loading to your leg day. Not only can they add another direction to your training, but they transfer over well to athletics. And yes, they’re damned effective muscle-builders, too.

Lots of Ways to Do Them

Box step-offs are somewhere between a lateral lunge and a squat. Adding a box or riser takes you further into deficit. The height of the box and degree of deficit are up to you. For those that don’t want much extra range of motion, stepping off a 45-pound plate might be enough.

Conversely, setting a box and some risers up to knee height would have advantages for those that want a deep deficit. (I like a multi-directional riser (on Amazon).)

A single dumbbell in the offside hand works great, but most seem to prefer the feel of a kettlebell. This variation is a good starting point for many and allows some respectable loading for even the strongest lifter. It’s not uncommon for someone to get to the point where they can use a third of their body weight in one hand.

Other effective ways to load step-offs are in a goblet position, front rack position, or with a landmine setup. The landmine provides an element of stability, and it’s one of the most comfortable variations (if you get the setup right). Hold the bar in the offside hand or use both hands.

A medicine ball or even body weight is fine for beginners. Just make sure you respect the movement with these rules:

1. A Deficit is for a Deficit

Some lifters use a raised platform and stop before getting into the deficit. But the point of a deficit is to increase the range of motion.

Unless you’re doing a goblet squat, EZ-bar front squat, or are a beginner stepping off a 45-pound plate, the implement you’re using needs to drop below the top of whatever you’re standing on, thus taking you into a deficit! If it doesn’t, then there’s not really much use for the extra height.

2. Put on the Brake

As you step sideways off the box, there’s a “braking effect” happening. The offside leg must step off and absorb the impact forces through the abductors, quadriceps, and glutes. This braking effect is a form of eccentric overload, and eccentric overload is good for building muscle.

3. Lean with a Purpose

Depending on how you hold the weight, the distribution of load and body position change. You can have a more upright torso by using a goblet position or front rack or a slightly more forward-leaning torso with a weight hanging in front.

You can even emphasize a forward lean and get even greater hip dominance. Just focus on pushing your butt back more as if you were showing it off to the person behind you.

To target the offside leg, hold the weight on that same side of the body. We’re not talking about a massive change here, but when the weight is held in one hand, the load is shifted away from the nearside leg towards the offside, meaning that as you’re stepping off, the brakes need to work a little harder. That means more eccentric overload on the abductors, glutes, and quads on the offside leg. There tends to be a bigger forward lean in one-handed variations.

How to Program Step-Offs

Whichever way you perform box step-offs, it’s the combined lateral braking motion and increased hip and knee range of motion that makes this exercise so effective.

You need to decide whether you want to load the braking side more (emphasizing the eccentric overload) or if your focus is loading more through increased stretch and range of motion on the nearside leg.

Both can be great triggers of muscle growth and have carry-over advantages to sports. Pick your weight, sets, and reps based on these goals, although generally, 2-4 sets of 8-15 reps on each side work best.

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2 Likes

This is great

Thanks for this. They’re great. I started doing them about a month ago.

This is a good idea. Maybe mutton head commercial gym trainers could have their clients do these instead of poorly performed walking lunges

2 Likes

Or squatting on Bosu Balls (not sure why that bothers me so much)

I started the kettlebell version of these about 8 weeks ago along with the reverse deficit lunge. The lateral box step offs are definitely a keeper for me. I’ve seen an improvement in strength and stability since starting them