Kettlebell Concentration Curls
Seated kettlebell concentration curl with the upper arm braced against the inner thigh — direct biceps isolation.
Level: Foundation
Primary: Biceps
Movement: Isolation
Tags: Pull
Type: Strength (Weight Lifting)
Equipment: Kettlebell
Sports: Baseball Wrestling
Target muscles
The biceps brachii is the prime mover. The brachialis contributes. The brachioradialis assists. The thigh-bracing position eliminates compensation; the work concentrates entirely at the elbow. The kettlebell's hanging center of mass slightly differs from a dumbbell, providing a different feel.
How to perform
Setup
Sit on a bench with legs spread. Hold a kettlebell in one hand with an underhand grip. Brace the back of the working upper arm against the inside of the same-side thigh, just above the knee. The other hand rests on the other knee for stability.
Execution
Curl the kettlebell up toward the shoulder by flexing the elbow. The upper arm stays braced. Squeeze at peak contraction. Lower under control to the start. Slow controlled tempo. Complete all reps on one side before switching.
Common mistakes
- Letting the upper arm lift off the thigh.
- Rotating the torso.
- Going too heavy.
- Cutting the bottom range.
- Bouncing.
Progressions and regressions
Regress to dumbbell concentration curls. To progress, work pause curls, slow eccentric, or use a heavier kettlebell.
Programming notes
Biceps isolation finisher. 2-3 sets of 10-12 reps per side, once or twice a week.
