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Correct form for Seated Knee Tuck
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Seated Knee Tuck tutorial

The seated knee tuck is a no-equipment exercise for the abs, especially the lower portion, performed while seated on the floor or a bench. It brings the upper body and legs together at the same time and is very practical for home workouts.

How to perform

  1. Sit on the floor or the edge of a bench and place your hands slightly behind your hips.
  2. Lean back slightly and lift your feet off the floor with knees bent.
  3. Brace your core and balance on your hips.
  4. Extend your legs forward while leaning your upper body slightly back.
  5. Contract your abs to pull your knees toward your chest and bring your torso toward your knees.
  6. Repeat with a controlled rhythm without letting your feet touch the floor.
Breathing: Inhale as you extend your legs and exhale as you tuck your knees in.

Key tips

  • If it's too hard, lightly touch your feet to the floor between reps.
  • Keep your shoulders down and away from your ears.
  • Focus on the ab contraction rather than speed.

Common mistakes

  • Rounding the back excessively and letting the shoulders slump forward.
  • Leaning too much on the hands instead of using the abs.
  • Performing the movement fast and without control.
Safety: People with lower-back or tailbone pain should use a soft surface and stop if their back starts to hurt.
Abs and corePrimary muscle
Body weightEquipment
BeginnerLevel
HomeLocation

Suggested sets and reps

Beginner2–3 sets × 12–15 reps
Muscle mass3–4 sets × 10–15 reps
Strength3 sets × 8–10 reps
Fat burning3 sets × 15–20 reps

Pick a weight where the last 1 to 2 reps are hard but done with correct form.

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