The one-hand swing is the two-hand swing with the bell in one hand: the same explosive hip hinge, but now your trunk also has to stop the bell from twisting you. A lab study of overhead-style swings found the one-hand version works the back muscles on the side opposite the bell harder and the front abs less than the two-hand swing, so the two train your trunk differently. Own the two-hand swing first, then bring the same crisp hip snap here.
Hike it back
Stand with your feet about shoulder-width apart and the bell on the floor a little in front of your toes. Heels, balls of the feet and toes all stay planted for the whole set.
your weight spread over the whole foot.
Hinge to the bell: push your hips back, keep your back neutral and your knees unlocked, and grip the handle with one hand, palm down. Pack the working shoulder: down and back, not shrugged toward your ear. Hips stay above your knees, shoulders above your hips.
hamstrings loaded, working shoulder set, chest square to the floor.
Hike the bell back high between your legs with a straight working arm. The handle passes above your knees. Breathe in as it goes back.
the bell loading behind you while your shoulders stay level.
Snap & stay square
Drive your hips forward fast and stand tall, hips and knees fully extended, body in one straight line. Your knees should not drift forward on the way up. Breathe out hard as you lock out.
glutes and abs tight at the top, standing tall, not leaning back.
Let the hip drive float the bell to about chest height, working arm almost straight and the bell in line with your forearm (no bent wrist). Don't lift it with your shoulder.
a brief weightless moment at the top.
Keep both shoulders facing forward the whole time. The bell will try to pull the loaded side forward and down; your trunk resists it. With a heavy bell your shoulders can look slightly off-centre, but your torso should not actually twist.
your trunk working to stay square, especially the back on the side away from the bell.
The free hand
StrongFirst coach Brett Jones lists several good options for the free hand: tap the outside of the handle with your free palm at the top (if you miss it, your swinging arm has drifted or your shoulders have turned); mimic the working arm with a smaller arc; guard beside your face with the arm close to your ribs; hold it out to the side; or rest it behind your lower back, only if that's comfortable for your shoulder. Two to avoid: swinging the free arm hard, which twists the torso, and resting the hand on your thigh, which brakes and rotates you and often means the bell is too heavy.
Absorb & switch
As the bell falls, stay tall and wait. Hinge only when your upper arm touches your ribs. Receive it high between your legs, handle above your knees, and drive straight into the next rep.
the bell falling to you, then a quick hips-back.
Swing one side for a set, then switch. To finish, let the last backswing bring the bell forward and hinge to set it down in front of you. Changing hands mid-set (hand-to-hand swings) is a separate skill.
the same rhythm on both sides; expect one side to be stronger at first.
Feel it
A fast hip snap, a brief float, and a torso that stays square even though the weight is on one side. Your grip should feel secure; if the bell feels like it might fly out of your hand, it's too heavy for one-hand work. The swing loads your lower back (lab measurements show it), and a few people find swings irritating. If your back or shoulder aches, or you start twisting or shrugging, stop the set and go back to two hands or a lighter bell.
Fix-its
- Your torso twists toward the bell Keep both shoulders facing forward and use the free-hand tap at the top as a check. Calm the free arm down if it's swinging hard. If you still twist, use a lighter bell.
- Your working shoulder shrugs up or gets pulled forward Pack the shoulder down and back before the hike and keep it there. Let the hips float the bell; don't lift with the shoulder.
- Your free hand rests on your thigh That brakes and twists the swing. Pick a free-hand option (tap, mimic, guard) and drop the bell weight if you need the thigh for support.
- You squat the swing Send your hips back, not down. At the bottom your hips stay above your knees and your shoulders above your hips.
- The bell drops below your knees or drifts away Stay tall until your upper arm touches your ribs, then hinge, and keep the handle above your knees on the backswing.
Drill
- Prerequisite: two-hand swings you can do without difficulty, with a crisp snap and float.
- Mixed sets (from StrongFirst's Steve Freides): in a set of 10, do 2 two-hand, 2 left, 2 two-hand, 2 right, 2 two-hand. To switch, finish a two-hand swing, change to one hand while the bell is briefly still in front of you, and swing back.
- Build gradually: swap one two-hand set per session for a mixed set, then shift the ratio (2 two-hand + 3 per side, then 1 two-hand + 4 per side) before doing full one-hand sets.
- Free-hand tap drill: short one-hand sets tapping the handle with your free palm at every top. A missed tap means you turned or your arm drifted.
- Film from the front to check your shoulders stay level and square, and from the side to check hips above knees and full lockout.
Sources
- StrongFirst — Sinister: One-Arm Swing Standards
- StrongFirst — Brett Jones: What to Do With Your Free Hand During a One-arm Swing (c. 2016)
- StrongFirst — Steve Freides: Simple & Sinister: Getting from Two- to One-Hand Swings (c. 2014)
- StrongFirst — Brett Jones: The Perfect Kettlebell Swing: Is There Such a Thing? (c. 2015)
- ACE — Exercise Library: Single Arm Swing
- Andersen, Fimland & Saeterbakken — Trunk Muscle Activity in One- and Two-Armed American Kettlebell Swing in Resistance-Trained Men, Sports Med Int Open 3(1) (2019)
- McGill & Marshall — Kettlebell swing, snatch, and bottoms-up carry: back and hip muscle activation, motion, and low back loads, J Strength Cond Res 26(1) (2012)
Last checked 2026-10-26.