Bicycle Twisting Crunch

Bicycle Twisting Crunch Exercise Description

The Bicycle Twisting Crunch is a bodyweight core exercise combining a rotational crunch with alternating hip flexion. It primarily targets the rectus abdominis and external/internal obliques, with the hip flexors assisting as the legs move. The goal is to rotate the ribcage toward the opposite knee while maintaining a stable pelvis and a neutral neck. Keeping the lower back gently in contact with the floor (slight posterior pelvic tilt) helps emphasize the abdominal wall and limits excessive lumbar extension. Use smooth, controlled motion rather than speed, focusing on bringing the shoulder toward the knee instead of pulling the elbow to the knee.

Muscle Groups: Abs, Core, Obliques, Waist
Target Muscles: External Obliques, Internal Obliques, Rectus Abdominis
Assisting Muscles: Iliacus, Psoas Major
Stabilizing Muscles: Multifidus, Quadratus Lumborum, Splenius Capitis, Sternocleidomastoid, Transversus Abdominis
Body Area: Upper Body
Body Parts: Core, Torso
Body Surface: Front, Side
Body Symmetry: Unilateral
Equipment: Bodyweight
Exercise Patterns: Other
Exercise Type: Strength
Functional Grouping: Trunk Flexors, Trunk Lateral Flexors, Trunk Rotators
Joint Involvement: Multi-joint
Muscle Location: Deep Side Abs, Side Abs, Stomach
Movement Direction: Rotational
Muscle Position: Anterior, Lateral
Gender: Female

How To Do The Bicycle Twisting Crunch Exercise

‘- Lie supine with knees bent, feet on the floor. Lightly cradle the base of your skull with your fingertips; keep elbows wide.
– Brace the abdominal wall and gently posteriorly tilt the pelvis so the lower back contacts the floor.
– Lift both feet to tabletop (hips and knees about 90 degrees).
– Exhale and lift the shoulder blades off the floor into a small crunch.
– Rotate the ribcage to the left as you draw the right knee toward the chest; simultaneously extend the left leg to an angle that keeps the lower back down.
– Think “right shoulder toward left knee”; keep elbows wide and neck neutral (gaze up/diagonal).
– Inhale through the center, then exhale to switch sides: rotate right as the left knee comes in and the right leg extends.
– Keep the pelvis steady, ribs down, and movement controlled—avoid yanking the head or arching the lower back.
– If the back lifts, reduce leg extension range or keep both knees bent (tabletop) while rotating.

Bicycle Twisting Crunch Tips

‘- Lightly cradle the base of your skull with your fingertips and keep your elbows wide.
– Brace your abdominal wall and gently posteriorly tilt the pelvis so your lower back stays in contact with the floor.
– Lift both feet to tabletop (hips and knees about 90 degrees) before you start crunching and rotating.
– Exhale as you lift your shoulder blades off the floor into a small crunch.
– Rotate your ribcage toward the left as you draw the right knee toward your chest.
– Extend the opposite leg only to an angle that lets you keep your lower back down.
– Think “shoulder toward opposite knee,” not “elbow to knee,” while keeping your elbows wide.
– Keep your neck neutral with your gaze up or on a diagonal rather than toward your knees.
– Inhale through the center, then exhale as you switch sides.
– Keep the pelvis steady, ribs down, and avoid yanking your head or arching your lower back; if your back lifts, reduce leg extension or keep both knees bent in tabletop.

Bicycle Twisting Crunch Beginner Introduction

The Bicycle Twisting Crunch is a bodyweight core movement that blends a gentle twist of the upper body with alternating leg action. The person lies on the back, lightly supporting the head with the hands while the legs move one at a time, as if pedaling in the air. As the chest turns toward the opposite knee, the shoulders lift slightly from the floor, creating work through the abs and side abs, while the hip flexors help guide the legs.

This exercise emphasizes control, not speed. The lower back stays softly settled into the surface to highlight the front of the midsection and reduce strain through the low spine. Rotation comes from the ribcage and shoulders rather than pulling with the elbows or tugging the head, encouraging a relaxed neck and steady hips. Breath is coordinated with the motion, with exhalation pairing naturally with the twist and inhalation as the body passes back through the center, creating a smooth, continuous core-focused rhythm.