Seated Knee Tuck

Start

Finish

How to do it

Sit on the floor or the end of a bench leaning back on your hands, lift the feet, then draw both knees toward the chest and extend them back out long without letting the feet touch down.

Muscles worked

Primary: core · Also works: hip_flexors

Equipment

No equipment

Common mistakes

• Rounding the lower back and collapsing backward instead of keeping the chest tall
• Letting the feet tap the floor between reps, which kills the tension
• Rocking the whole torso back and forth to swing the knees in

Variations

• Feet tap the floor lightly between reps as a regression
• Perform on a bench for a bigger range
• Hold a light dumbbell between the feet

Can't do this one? Swap it for

• Tuck-Up
• Reverse Crunch
• Hanging Knee Raise
• Russian Twist

Related exercises

• Front Plankcore
• Dead Bugcore
• Hollow Body Holdcore
• Hanging Leg Raisecore
• Mountain Climbercore
• Defense Drill (Slip / Roll / Block)core