Oblique Crunches Floor
Oblique Crunches Floor Exercise Description
Oblique Crunches (Floor) target the external and internal obliques through a controlled trunk curl with slight rotation. You’ll lie on your back, rotate both knees to one side, and lift the head, shoulders, and upper back by drawing the rib cage toward the pelvis on the same side. This short-range abdominal curl emphasizes the obliques while the rectus abdominis assists in flexing the spine and the transverse abdominis helps brace the trunk. Because it’s done on the floor with body weight, it’s accessible and easy to set up. Proper alignment—neutral neck, elbows open, and a steady pelvis—keeps the movement focused on the abdominal wall rather than the neck or hip flexors. Move slowly, breathe intentionally, and keep the motion crisp and controlled for the best muscle engagement.
- Muscle Groups: Abs, Obliques, Waist
- Target Muscles: External Obliques, Internal Obliques
- Assisting Muscles: Rectus Abdominis
- Stabilizing Muscles: Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core
- Body Surface: Side
- Body Symmetry: Unilateral
- 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: Other
- Muscle Position: Lateral
- Gender: Male
How To Do The Oblique Crunches Floor Exercise
‘- Lie on your back with knees bent and feet flat; brace your abdominal wall.
– Place fingertips lightly behind ears or cross arms over chest; keep elbows open and neck neutral.
– Let both knees drop to one side until the outer thigh rests on the floor; shoulders stay square to the ceiling.
– Exhale and curl head, neck, and shoulder blades off the floor by drawing ribs toward the pelvis on the side your knees point to.
– Keep gaze up; maintain a small space between chin and chest (avoid pulling on the head).
– Pause briefly at the top with abdominals engaged; low back stays quiet against the floor.
– Inhale and lower the shoulder blades back down with control—no bouncing or momentum.
– Keep elbows wide, breathe continuously, and avoid twisting from the neck or swinging the legs.
– Switch leg position to the other side and repeat the same controlled pattern.
Oblique Crunches Floor Tips
‘- Brace your abdominal wall before you start and maintain that tension throughout.
– Keep elbows open and neck neutral, with fingertips only lightly supporting your head if used.
– Let both knees drop to one side while keeping your shoulders square to the ceiling.
– Exhale as you curl your head, neck, and shoulder blades up by drawing your ribs toward the pelvis on the side your knees point to.
– Keep your gaze up with a small space between your chin and chest; avoid pulling on your head.
– Pause briefly at the top with abdominals engaged and your low back quiet against the floor.
– Inhale and lower your shoulder blades back down under control, without bouncing or using momentum.
– Keep elbows wide, breathe continuously, and avoid twisting from the neck or swinging the legs.
– Move slowly with crisp, controlled motion to keep the work focused on the abdominal wall.
– Switch leg position to the other side and repeat with the same controlled pattern.
Oblique Crunches Floor Beginner Introduction
Oblique Crunches (Floor) are a bodyweight core exercise performed lying on the ground, aimed mainly at the side abs with help from the front abs and deep core muscles. The movement blends a gentle curl of the upper body with a small turn of the trunk toward the side where the legs rest, creating a compact range of motion that highlights rotation and control rather than big, sweeping crunches.
During this variation, the upper back, head, and shoulders rise from the floor while both knees fall to one side and rest, with the shoulders still facing the ceiling. This positioning encourages the rib cage on the working side to draw closer to the pelvis, while the opposite side lengthens. With a steady pelvis, open elbows, and a relaxed, aligned neck, effort centers on the abdominal wall instead of the hip flexors or neck. The pace is typically slow and deliberate, with smooth, continuous breathing and crisp, precise reps that build awareness of how the midsection supports small, controlled spinal movement.