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Seated Knee Tuck to Leg Extension

Seated combination that moves from a knee tuck into a leg extension for continuous core and hip-flexor work.

Core & AbsIntermediateStrengthCompound

At a glance

Muscles workedPrimary: abs & hip flexors. Secondary: quads, core
Muscle groupCore & Abs
DifficultyIntermediate
TypeStrength · Compound
Sets & reps4 sets × 10-15 reps
Estimated calories burned~24 kcal
EquipmentNone needed

How to do it

  1. Sit on the edge of a bench or chair, leaning back slightly with hands for support if needed.
  2. Tuck the knees toward the chest.
  3. Extend the legs straight out while keeping the core braced.
  4. Return to the tucked position with control.
  5. Repeat for desired reps.

Coaching tips

Benefits

Seated combination that moves from a knee tuck into a leg extension for continuous core and hip-flexor work.

Common mistakes

Avoid leaning back excessively or using momentum.

Make it harder

Slow the tempo or add light ankle weights.

Make it easier

Perform the tuck and extension as separate movements.

Breathing

Exhale on the tuck and extension, inhale on the return.

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General fitness and nutrition information, not medical advice. Check with a qualified professional before starting a new exercise or diet plan, especially if you have an injury or health condition.