Biceps Leg Concentration Curl

Biceps Leg Concentration Curl Exercise Description

The concentration curl (elbow braced on the inside of the thigh) is a single‑arm elbow‑flexion exercise that emphasizes the biceps by minimizing shoulder movement. Primary muscles are the biceps brachii, with assistance from the brachialis and brachioradialis; the forearm flexors help stabilize the wrist. Using a dumbbell and a seated, slightly hinged posture creates a stable base so the upper arm stays fixed and the forearm does the work. Keeping a neutral spine, level pelvis, and quiet shoulder girdle helps you direct tension to the elbow flexors and maintain joint alignment. Controlled lifting and lowering, a full but comfortable range of motion, and a neutral wrist position support effective, repeatable technique. This variation is performed one arm at a time with the working elbow lightly pressed against the inner thigh just above the knee.

Muscle Groups: Biceps
Target Muscles: Biceps Brachii - Long Head, Biceps Brachii - Short Head
Assisting Muscles: Brachialis, Brachioradialis
Stabilizing Muscles: Flexor Carpi Radialis, Flexor Carpi Ulnaris, Multifidus, Transversus Abdominis, Trapezius - Middle Fibers
Body Area: Upper Body
Body Parts: Arms, Upper Arms
Body Surface: Front
Body Symmetry: Unilateral
Equipment: Bodyweight
Exercise Patterns: Pull
Exercise Type: Strength
Functional Grouping: Elbow Flexors, Forearm Supinators
Joint Involvement: Single-joint
Muscle Location: Inner Bicep, Outer Bicep
Movement Direction: Vertical
Muscle Position: Anterior
Gender: Male

How To Do The Biceps Leg Concentration Curl Exercise

‘- Sit on the front edge of a bench or sturdy chair; feet wider than hips, knees bent about 90 degrees.
– Hinge forward slightly with a neutral spine; set shoulder blades gently down and back.
– Hold a dumbbell in one hand, palm facing up (supinated).
– Place that elbow against the inside of the same‑side thigh just above the knee; upper arm vertical and still.
– Let the arm extend toward the floor until the elbow is nearly straight; keep the wrist neutral.
– Brace your torso; avoid leaning, twisting, or shrugging as you move.
– Curl by flexing the elbow only; keep the upper arm pinned to the thigh and the elbow from drifting.
– Raise until the forearm is roughly vertical and the biceps are fully shortened without the shoulder rolling forward.
– Pause briefly; keep the wrist aligned (no excessive flexion/extension).
– Lower under control to near full elbow extension without resting the weight on the floor.
– Switch arms and repeat, maintaining the same setup and range of motion.

Biceps Leg Concentration Curl Tips

‘- Sit on the front edge of the bench with feet wider than hips and knees bent about 90 degrees to create a stable base.
– Hinge forward slightly while keeping a neutral spine and a level pelvis.
– Set your shoulder blades gently down and back to keep the shoulder girdle quiet.
– Place the working elbow lightly against the inside of the same‑side thigh just above the knee, and keep the upper arm vertical and still.
– Hold the dumbbell with your palm facing up and keep a neutral wrist as the arm extends toward the floor.
– Brace your torso and avoid leaning, twisting, or shrugging as you move.
– Curl by flexing the elbow only, keeping the upper arm pinned to the thigh and the elbow from drifting.
– Raise until the forearm is roughly vertical and the biceps are fully shortened without letting the shoulder roll forward.
– Pause briefly at the top while keeping the wrist aligned (no excessive flexion or extension).
– Lower the dumbbell under control to near full elbow extension without resting it on the floor, then switch arms using the same setup and range of motion.

Biceps Leg Concentration Curl Beginner Introduction

The concentration curl (elbow braced on the inside of the thigh) is a seated dumbbell curl performed one arm at a time, with the upper arm resting against the inner thigh. This setup gives the arm a solid anchor so the bend at the elbow becomes the main source of movement, placing strong emphasis on the biceps while the forearms assist in holding the wrist steady. The lifter usually sits on a bench or chair with a gentle forward lean, creating a grounded position that lets the working arm move in a clear, controlled path.

Because the upper arm stays fixed and the shoulders stay relatively quiet, this curl variation highlights muscle control rather than momentum. A straight, natural line through the back and hips supports comfortable alignment, while the dumbbell travels through a long, smooth arc from near-straight to fully bent at the elbow. The focus stays on steady lifting and lowering, with the wrist in a straight line, so the biceps and forearms share the effort in a consistent, repeatable way.