Bent-Knee Lying Twist
Bent-Knee Lying Twist Exercise Description
The Bent-knee Lying Twist is a controlled trunk-rotation drill performed on the floor. It targets the internal and external obliques and deep spinal rotators (including multifidus) while teaching you to keep the shoulder blades anchored. With the knees moving together, the pelvis rotates as a unit and the lumbar spine turns through a comfortable, pain-free range—without flexing or extending. The emphasis is smooth rotation, steady breathing, and returning to center using abdominal control rather than momentum. Performed deliberately, it builds rotational core control and gentle mobility with only body weight.
- Muscle Groups: Abs, Obliques, Waist
- Target Muscles: External Obliques, Internal Obliques
- Assisting Muscles: Multifidus
- Stabilizing Muscles: Rhomboid Major, Transversus Abdominis, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Core
- Body Surface: Side
- Body Symmetry: Other
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Single-joint
- Muscle Location: Deep Side Abs, Side Abs
- Movement Direction: Rotational
- Muscle Position: Lateral
- Gender: Female
How To Do The Bent-Knee Lying Twist Exercise
‘- Lie on your back with arms out at shoulder height (T position), palms up, shoulder blades heavy on the floor.
– Bend hips and knees to about 90 degrees; keep knees together and shins parallel to the floor. Keep your neck neutral and gaze to the ceiling.
– Lightly brace by exhaling to set the ribs down and engage the abdominals.
– Slowly rotate both knees and pelvis to one side as a unit. Stop before the opposite shoulder lifts or your low back arches.
– Pause briefly; breathe into your lateral ribs while maintaining control.
– Use your obliques to draw the knees back to center without swinging.
– Repeat to the other side with the same controlled tempo and range.
– Keep knees stacked (don’t let the top knee slide forward), feet relaxed, and ribs down.
– Move only through a comfortable, pain-free range; do not force the knees to the floor.
– Common mistakes to avoid: dropping the knees quickly, letting shoulders peel off the floor, holding your breath, or craning the neck.
Bent-Knee Lying Twist Tips
‘- Lie with arms in a T position, palms up, and keep your shoulder blades heavy on the floor.
– Bend hips and knees to about 90 degrees, knees together and shins parallel to the floor.
– Keep your neck neutral with your gaze on the ceiling.
– Exhale lightly to set the ribs down and engage the abdominals before you start rotating.
– Rotate both knees and pelvis together as a unit, stopping before the opposite shoulder lifts or your low back arches.
– Pause at the end of the range and breathe into your lateral ribs while maintaining control.
– Use your obliques to draw the knees back to center without swinging or using momentum.
– Keep the knees stacked so the top knee doesn’t slide forward, and let the feet stay relaxed.
– Move only through a comfortable, pain-free range and do not force the knees to the floor.
– Avoid dropping the knees quickly, letting shoulders peel off the floor, holding your breath, or craning the neck.
Bent-Knee Lying Twist Beginner Introduction
The Bent-knee Lying Twist is a gentle floor-based core rotation exercise that uses only bodyweight. With the legs bent and lifted and the arms opened out, the lower body turns from side to side while the upper back and shoulder blades stay in contact with the ground. This pattern brings the waist, side abs, and deep spine stabilizers into play, encouraging them to guide the turn rather than relying on swinging or momentum.
Because the knees and hips move together, the twisting action happens mainly through the lower back in a way that respects a comfortable, easy range. The rhythm centers on unhurried motion and steady breathing, with the midsection working to draw the legs back through the middle after each rotation. When practiced with this slow, deliberate feel, the exercise highlights control, stability, and smooth, pain-free rotation, making it a useful option for building rotational core awareness and light mobility without added equipment.