Seated Knee Tucks
🔻 Lower Abs · updated September 2026
⏱ 45 sec🔁 3 sets of 12📶 beginner🌿 low-impact
Targets: lower abs, works from a chair or bench too
How to do it
- 1Sit on the edge of a chair or the floor, leaning back slightly, hands beside you.
- 2Lift your feet and pull both knees toward your chest.
- 3Extend the legs back out without touching down.
- 4Keep the chest proud — no slumping.
Form tips
- • Think 'knees to chest, chest to knees' — both move
- • Slower extension = harder
- • Great travel/office option
Common mistakes
- • Rounding into a slump
- • Feet tapping the floor every rep
- • Gripping the chair with white knuckles instead of bracing the core
