Seated Knee Tuck
Primary
Core
Secondary
Hip flexors
Equipment
Bodyweight
Difficulty
Beginner
Type
Pull
NASM-CPT, CSCS certified trainers. Every guide is built from peer-reviewed research and real coaching experience.
For training your core, the Seated Knee Tuck is a solid beginner-level pulling movement in the isolation category. Use for lower ab training for optimal results.
Everything You Need to Know About the Seated Knee Tuck
The Seated Knee Tuck is a good for beginners exercise that targets your Lower rectus abdominis. It's a popular choice for building strength and muscle in these areas. When should you use it? Use for lower ab training for optimal results. This timing makes the most of your workout and helps you get better results. Who is this for? All fitness levels looking to build strength and muscle definition. Whether you're just starting out or working toward a specific goal, this exercise fits into your routine.
What muscles does the Seated Knee Tuck work?
Primary
Secondary
Stabilizers
Step-by-step: Seated Knee Tuck
- 1
Sit on edge of bench or floor.
- 2
Lean back slightly for optimal results.
- 3
Extend legs out straight.
- 4
Pull knees toward chest.
- 5
Squeeze abs at the top.
- 6
Extend legs back out.
What are the best tips for the Seated Knee Tuck?
Keep torso stable for optimal results.
Control the movement.
Feel the lower ab contraction.
Can add weight between feet.
Mistakes to watch for on the Seated Knee Tuck
Rocking torso - this is a common issue that reduces exercise effectiveness.
On pulling movements like the Seated Knee Tuck, this mistake typically means your arms are doing work that should come from your Lower rectus abdominis. Initiate every rep by engaging your Lower rectus abdominis first, then let your arms follow.
Using momentum instead of controlled muscle contraction.
Bouncing or using momentum during the Seated Knee Tuck takes work away from your Lower rectus abdominis and puts your connective tissue at risk. Control the weight through the full range — if you can't, lower the load.
Not contracting abs.
Without core engagement during the Seated Knee Tuck, your spine loses its protective brace. Think about tightening your midsection as if someone were about to push you — maintain that tension through every rep.
Who should do the Seated Knee Tuck?
All fitness levels looking to build strength and muscle definition.
How to Program the Seated Knee Tuck
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3 sets of 12-15 reps. Rest 45s.
What are good alternatives to the Seated Knee Tuck?
Other Variations
- Weighted Seated Knee Tuck
- Bench Knee Tuck
This Exercise Is in Your Plan
MySetPlan picks the right exercises for your goals — like the Seated Knee Tuck — and builds them into a monthly program. Every set, every rep, planned out.
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Safety Notes
- Keep torso stable.
- Control movement.