The around the world exercise targets your shoulders and core as primary movers, with the exact muscle emphasis depending on which version you perform. The dumbbell version (lying on a bench) focuses heavily on all three heads of the deltoids, while the kettlebell version (passing the bell around your waist) is primarily a core stability exercise that also challenges your shoulders, hips, and grip. Both versions build functional strength through a circular movement pattern you won’t get from standard presses or raises.
Dumbbell Around the World: Shoulder Focus
The dumbbell version is performed lying on a flat bench. You hold two dumbbells above your head with arms extended, palms facing the ceiling, then sweep them in a wide semicircle down to your thighs and back again. Your elbows stay slightly bent and your arms stay parallel to the floor throughout the arc.
This 180-degree range of motion is what makes the exercise effective. A standard lateral raise only works your shoulders through part of their range, but the around the world traces a full semicircle that hits the front (anterior) deltoid, the side (lateral) deltoid, and transitions between the two continuously. That constant tension through a longer arc creates a stimulus your shoulders don’t get from conventional raises, which is why trainers recommend using a lighter weight than you’d normally pick for lateral or front raises.
Your rotator cuff muscles work throughout the movement to stabilize the shoulder joint as the dumbbells travel through that wide arc. Your biceps and triceps engage to control the speed of the weight, and your upper traps can creep into the movement if you’re not careful. Keeping your shoulders pulled down and away from your ears ensures the deltoids do the work instead of your traps taking over.
Kettlebell Around the World: Core Focus
The kettlebell version looks completely different. You stand upright and pass a kettlebell around your waist in a circular motion, switching hands twice per revolution: once in front of your body and once behind your back. The movement is slow and controlled, not a fast swing.
The primary training effect here is anti-rotational core strength. As the kettlebell orbits your body, its weight constantly tries to twist your torso off-center. Your job is to resist that pull and keep your hips locked forward. This trains your obliques, transverse abdominis (the deep stabilizing layer of your core), and rectus abdominis in a way that mimics real-world demands on your spine, like carrying a heavy bag on one side or resisting a push.
Beyond the core, the kettlebell version engages your deltoids, spinal erectors (the muscles running along your lower back), wrist flexors and extensors, quads, glutes, and various hip muscles. It’s a surprisingly full-body exercise for something that looks simple.
Why Anti-Rotation Matters
Most core exercises involve creating movement: crunches flex the spine, Russian twists rotate it. The kettlebell around the world trains the opposite skill, resisting movement. Your core has to brace against the shifting weight to keep your spine neutral and your hips square. This type of anti-rotational work is closely linked to lumbar spine stability and injury prevention, particularly for people who play rotational sports like golf, tennis, or baseball, or anyone who wants a more resilient lower back.
If your hips rotate along with the kettlebell as it passes behind you, you’re losing this benefit entirely. The exercise only works as intended when your torso stays still and your arms do the moving.
Form Tips for Each Version
Dumbbell Version
Keep your arms parallel to the floor for the entire semicircle. The moment you let the dumbbells drift upward, you reduce the tension on your deltoids. Use a weight that lets you control the full arc without your back arching off the bench. The movement should feel like making a snow angel with weights.
Kettlebell Version
Stand with your feet shoulder-width apart and imagine a rope pulling the top of your head toward the ceiling. Tuck your ribs down toward your beltline to engage your core and prevent your ribcage from flaring out. Hold the end of the kettlebell handle rather than the middle so there’s room for a clean hand-off during each switch. Start light and keep the pace slow. If momentum is whipping the bell around, the weight is doing the work instead of your muscles.
Choosing the Right Version
If your goal is shoulder size and mobility, the dumbbell version is the better pick. It puts your deltoids under tension through a range of motion that standard shoulder exercises miss, making it a solid addition to upper body days.
If you want core stability, grip endurance, and a full-body warmup or finisher, go with the kettlebell version. It pairs well with planks and loaded carries for a complete anti-rotation training block. Many lifters use it as a warmup before heavy squats or deadlifts because it activates the core and hips without fatiguing them.
Both versions reward lighter weights and controlled movement. Momentum is the enemy of this exercise in either form. The slower you go, the harder your muscles have to work to manage the circular path.