A clean is a weightlifting movement where you pull a barbell from the floor to your shoulders in one continuous motion. It’s one of the most technically demanding exercises in strength training and forms the first half of the clean and jerk, one of two competition lifts in Olympic weightlifting. The movement combines raw pulling strength with speed, timing, and the ability to drop under a heavy bar and catch it in a front squat position.
How the Clean Works
The clean starts with a loaded barbell on the floor. You grip it with palms facing down, hands slightly wider than shoulder width, and pull it upward in a single unbroken movement until it rests across the front of your shoulders. The bar can slide along your thighs during the pull, but the lift must be one continuous effort from ground to shoulders. Once the bar is racked on your shoulders (sitting on your collarbones, chest, or fully bent arms), you stand up to full extension with your feet on the same line. That’s a completed clean.
What makes it tricky is that you’re not just deadlifting the bar and then flipping it up. You’re generating enough upward momentum through your legs and hips that the bar becomes briefly weightless, giving you a split second to drop underneath it and catch it in a deep squat. The whole thing takes about one to two seconds.
The Phases of the Pull
The clean breaks down into distinct phases, each with a specific job.
The first pull covers the moment the bar leaves the floor until it reaches knee height. This phase is about generating initial momentum. You push through your legs using mostly knee extension with a small amount of hip extension, keeping your torso angle constant relative to the ground. Your shoulders stay over or slightly in front of the bar. The goal here isn’t maximum speed; it’s controlled acceleration and positioning.
The transition (sometimes called the scoop or double knee bend) happens as the bar passes the knees. Your knees rebend slightly and shift forward under the bar while your torso moves toward vertical. This repositions your body so you can unleash the most powerful part of the lift.
The second pull is where the real force happens. This is the explosive triple extension of your ankles, knees, and hips all at once, driving the bar upward with maximum velocity. The barbell-lifter system has its greatest momentum during this phase. Think of it as a vertical jump with a barbell in your hands.
The turnover and catch happen almost simultaneously. Once you’ve fully extended, you aggressively pull yourself under the rising bar, rotating your elbows forward and up so the bar lands across your front shoulders. You receive it in a full front squat, then stand up to complete the lift. This recovery phase requires stability and core strength to keep the bar secure while you rise out of the bottom position.
Muscles Used in the Clean
The clean is a full-body movement, but the primary drivers are the glutes and lower back. These muscles handle the bulk of the pulling and extending during the first and second pulls. Your quads, hamstrings, and adductors work as secondary movers, contributing to the initial pull off the floor and the deep squat in the catch. Your trapezius muscles help shrug the bar upward at the top of the pull, and your forearm flexors maintain grip throughout.
Because the clean demands coordination across so many muscle groups firing in sequence, it builds a type of whole-body power that isolated exercises can’t replicate. This is why it’s widely used outside of competitive weightlifting, in sports training programs for athletes who need explosive speed and hip drive.
Clean Variations
The term “clean” by itself (sometimes called a squat clean or full clean) means you catch the bar in a full-depth front squat. But several variations change the catch position or starting point.
A power clean uses the same pulling mechanics but you catch the bar higher, typically with your thighs above parallel to the floor, in a partial squat or quarter squat. Because you’re not dropping as deep, you need to pull the bar higher, which usually means you’ll lift less weight than in a full clean. Power cleans are popular in general athletic training because they’re slightly easier to learn and still develop explosive hip power.
A hang clean starts with the bar already off the floor, held at some point along the thighs. The most common starting position is just above the knees, with a slight bend at the knees and forward lean at the hips. From there you perform the second pull, turnover, and catch. The National Strength and Conditioning Association describes the hang clean as less technically demanding than pulling from the floor, making it a good entry point for learning clean mechanics. It’s especially useful for developing explosive power in the vertical plane because it isolates the most dynamic portion of the lift.
You can also combine these: a hang power clean starts from the hang position and is caught high, while a hang squat clean starts from the hang and is caught in a full squat.
Common Technique Mistakes
The clean has a steep learning curve, and several errors show up repeatedly in newer lifters.
- Hips rising too fast off the floor. When your hips shoot up before the bar moves, your legs straighten out early and you end up pulling with your back. This usually stems from weak legs or poor positioning at the start.
- Early arm bend. Bending your elbows before you’ve fully extended your hips and knees robs the pull of power. Your arms should stay straight and act like ropes until the second pull is complete.
- Bar drifting forward. If you shift onto your toes too early, push your hips forward instead of upward, or fail to keep the bar close to your body, the barbell ends up out in front of you. This makes the catch unstable or forces you to chase the bar forward.
- Slow elbow turnover. If you don’t rotate your elbows up and forward quickly enough, the bar crashes onto your wrists instead of sitting on your shoulders. This often comes from limited wrist or shoulder flexibility.
- Dropping instead of pulling under. There’s a difference between actively pulling yourself under the bar and just collapsing your legs. A passive drop leaves you in a weak, unstable position at the bottom and can result in the bar rolling forward off your shoulders.
Equipment for Cleans
You need a barbell with rotating sleeves (the ends where the plates load). Standard Olympic barbells have bearings or bushings that allow the sleeves to spin freely. This rotation is important because as you turn the bar over into the catch position, the plates need to spin independently of the bar. Without that rotation, the momentum of the plates will torque your wrists.
Bumper plates (rubber-coated weight plates all made to the same diameter) are the standard for cleans. They’re designed to be dropped from shoulder height without damaging the floor or the plates themselves. If you’re training in a home gym or commercial facility, bumper plates paired with a rubber platform or thick rubber flooring will protect your equipment and the surface underneath. One exception: very light bumper plates (around 5 kg or 10 lbs) are thinner and less durable, so avoid dropping those on their own.
The Clean in Competition
In Olympic weightlifting, the clean isn’t contested by itself. It’s the first half of the clean and jerk, one of the two official lifts (the other being the snatch). According to International Weightlifting Federation rules, the bar must be pulled from the platform to the shoulders in a single movement. After completing the clean, the lifter stands with feet on the same line, legs straight, before attempting the jerk overhead.
Between the clean and the jerk, lifters are allowed to adjust the bar’s position on their shoulders: unhooking their thumbs from a hook grip, lowering the bar slightly if it’s sitting too high and restricting breathing, or changing their grip width. This adjustment period is at the lifter’s own pace, which is why you’ll sometimes see competitors pause for several seconds between the two parts of the lift.