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Side Lunges

The side lunge steps wide to one side, sitting the hips back over the bent leg while the other leg stays long, loading the quads and glutes through a sideways range most training never visits. It builds the lateral strength and inner-thigh flexibility that field sports, tennis and real life all draw on. Coached by Maddy (NASM-CPT) — these are the exact form cues he gives on every client's first week.

Muscles worked

Quads · quadriceps Glutes · gluteus maximus Hamstrings Inner thighs · adductor magnus Outer glutes · gluteus medius

Sets & reps by goal

Goal	Sets × Reps	Rest
Strength	4 × 3–6 per side	2–3 min
Muscle	3–4 × 9–12 per side	60–90 s
Endurance	3 × 18–27 per side	45–60 s

Rep ranges per Helms 2014 · Schoenfeld 2016.

Level — Intermediate

Intermediate — the sideways depth demands inner-thigh mobility that forward lunges never test.

Proper form — 5 cues

Take a wide sideways step, toes of both feet pointing mostly forward
Sit the hips back and down over the stepping leg
Keep the trailing leg straight with its foot flat on the floor
Track the bent knee over the middle of that foot
Push hard off the bent leg to return to standing

Breathing: Inhale stepping out and descending, exhale driving back to standing.

The 3 mistakes Maddy corrects most

Knee collapsing inward on the bent leg. A caving knee under sideways load puts the joint's supporting structures in a vulnerable line while robbing the glute of leverage. Fix: Push the knee out over the second toe and shorten the step until that alignment holds.

Rising onto the toes of the trailing foot. A lifted trailing foot signals the step was too wide for your current inner-thigh flexibility, shifting stress to the groin. Fix: Narrow the stance until the straight leg's foot stays flat, and widen gradually over weeks.

Bending forward from the spine instead of the hips. A rounded torso moves the load to the lower back and out of the legs the lunge is meant to train. Fix: Hinge at the hips with a long spine — chest proud, backside travelling backward as you descend.

Common questions

What do side lunges work that regular lunges do not?

Regular lunges load the legs front-to-back; side lunges load them sideways, adding serious work for the inner thighs and the hip's lateral stabilizers while stretching the straight leg's adductors on every rep. Most training lives in the forward-backward plane, so the sideways pattern fills a genuine gap.

Are side lunges suitable for beginners?

They sit a step above basic squats and forward lunges because they demand inner-thigh flexibility and sideways knee control at the same time. Beginners can start with a shallow step and limited depth, holding onto a support if needed, and deepen the position as strength and mobility grow together.

How deep should I go in a side lunge?

Only as deep as three checkpoints allow: the bent knee tracking over its foot, the trailing foot flat, and the spine long. For some people that is a quarter-depth position at first, and that is fine — depth earned with control improves steadily, while forced depth just teaches bad positions.

Related exercises

Downward Dog to LungesQuads · Glutes Dynamic LungesQuads · Glutes Forward LungesQuads · Glutes Forward Lunges (Modified)Quads · Glutes Low Lunges Front TapQuads · Glutes

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