Swing (Kettlebell)
The Kettlebell Swing is a dynamic, explosive hip-hinge exercise that builds power, endurance, and posterior chain strength. It targets the glutes and hamstrings while engaging the core and upper back for stability.
Since the kettlebell swing is a high-fatigue ballistic movement, Iridium checks your sleep data and metabolic recovery score to ensure you have the energy capacity for explosive work. The system counts this tonnage toward your glute and hamstring maintenance volume while reviewing your 7-day workout history to prevent interference with heavy compound pulls like deadlifts.
Form Cues
- Hinge at the hips by pushing your butt back toward the wall behind you
- Keep your chest up and lats engaged to protect your spine
- Snap your hips forward aggressively to float the bell up
- Exhale sharply at the top of the movement as you squeeze your glutes
- Let the kettlebell act as a pendulum extension of your arms
- Don't turn the movement into a squat by bending your knees too much
- Don't use your shoulders or arms to lift the bell upward
- Don't allow your lower back to round at the bottom of the swing
- Don't lean back or hyperextend your spine at the top position
- Don't let the bell droop below your knees
Common Mistakes
- Squatting instead of hinging
- Lifting with the shoulders (front raise)
- Rounding the lumbar spine
- Hyperextending the lower back at the top
- Not locking out the hips fully
Muscles Worked
The swing is the gold standard for posterior chain development, primarily driving growth and power in the glutes and hamstrings. It also serves as a potent core exercise, forcing your abdominals and spinal erectors to brace dynamically against the momentum of the bell, while your lats and grip work to keep the weight controlled.
Primary
Secondary
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