Lunge (Barbell)
The Barbell Lunge is a dynamic unilateral leg exercise where you step forward with a weighted bar across your upper back. It builds significant lower body strength and mass, primarily targeting the quadriceps and glutes while improving balance and core stability.
Iridium programs this movement when your recovery metrics indicate you can handle high stability demands, avoiding it if your sleep data or recent workload suggests high systemic fatigue. It counts the load toward both quad and glute volume limits and uses RPE trends across sessions to determine exactly when you are ready to increase the weight.
Form Cues
- Keep your chest proud and torso upright throughout the movement.
- Step forward far enough to create 90-degree angles at both knees.
- Drive firmly through the heel of your front foot to return to standing.
- Brace your core tight before initiating the step to maintain balance.
- Don't let your front knee collapse inward past your big toe.
- Don't allow your front heel to lift off the ground.
- Don't slam your back knee into the floor at the bottom of the rep.
- Don't round your upper back or look down at your feet.
Common Mistakes
- Taking steps that are too short or cramped
- Placing feet in a straight line like walking a tightrope
- Leaning the torso too far forward
- Using momentum to bounce out of the bottom position
Muscles Worked
This exercise is a powerhouse for developing the quadriceps and gluteus maximus, with significant engagement from the hamstrings to control the descent. Because the load is placed on the upper back, your spinal erectors and deep core muscles must work overtime to maintain an upright posture and prevent rotation.
Primary
Secondary
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