Frog Crunch Hold
Frog Crunch Hold Exercise Description
The frog crunch hold is an isometric core exercise performed at the top of a crunch with the hips externally rotated and the soles of the feet together (“frog” or “butterfly” position). This stance reduces leverage from the hip flexors compared with a standard crunch, helping you focus on the rectus abdominis while the obliques and transverse abdominis assist in bracing. You’ll flex the upper spine just enough to raise the shoulder blades off the floor and then maintain that position with steady breathing. A gentle posterior pelvic tilt keeps the lower back lightly connected to the floor, promoting controlled spinal flexion rather than hip flexion. The result is a precise, time‑under‑tension hold that emphasizes trunk flexion strength and midline control without added equipment.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques, Internal Obliques
- Stabilizing Muscles: Diaphragm, Multifidus, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Other
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Flexors
- Joint Involvement: Single-joint
- Muscle Location: Stomach
- Movement Direction: Other
- Muscle Position: Anterior
- Gender: Male
How To Do The Frog Crunch Hold Exercise
‘- Lie on your back. Bring the soles of your feet together and let your knees fall open comfortably.
– Slide heels toward your hips to a comfortable distance; keep feet flat together.
– Posteriorly tilt your pelvis: gently tuck the tailbone so your lower back has light, even contact with the floor.
– Brace your abdomen (ribs down), as if preparing for a cough, without holding your breath.
– Place arms across your chest or reach fingertips toward your thighs. Avoid pulling on your head.
– Set your neck: slight chin tuck, eyes toward the ceiling, long back of the neck.
– Exhale and curl your upper spine, drawing the sternum toward the pelvis until both shoulder blades lift off the floor; keep the low back down.
– Hold this top position. Keep ribs stacked over the pelvis, breathing small controlled breaths while maintaining abdominal tension.
– Keep knees relaxed outward and feet together; avoid squeezing the glutes or pressing the heels.
– Maintain relaxed shoulders (no shrugging) and wide shoulder blades.
– To finish, lower the shoulder blades and head back to the floor under control, keeping the pelvis neutral to slightly posteriorly tilted.
Frog Crunch Hold Tips
‘- Keep the soles of your feet flat together and let your knees fall open comfortably into the frog position.
– Gently tuck your tailbone so your lower back stays in light, even contact with the floor.
– Brace your abdomen with the ribs down, as if preparing for a cough, but continue to breathe.
– Cross your arms over your chest or reach toward your thighs instead of pulling on your head.
– Set your neck with a small chin tuck and eyes toward the ceiling to keep the back of the neck long.
– Curl only the upper spine until both shoulder blades lift off the floor while the low back stays down.
– At the top, keep your ribs stacked over your pelvis and take small, controlled breaths without losing tension.
– Let the knees stay relaxed outward and feet together without squeezing the glutes or pressing the heels.
– Keep your shoulders relaxed (no shrugging) and shoulder blades wide as you hold, then lower back down under control.
Frog Crunch Hold Beginner Introduction
The frog crunch hold places the body in a shortened crunch position while the legs rest in a relaxed “frog” or “butterfly” shape. With the feet touching and the knees opened out, the hips contribute less, so the effort concentrates more on the abs. The upper back hovers just off the floor, creating a static challenge for the front of the torso while the neck and shoulders stay calm and supported. A small tilt of the pelvis helps the lower back stay gently settled into the ground, so the movement comes from the spine rather than from the hips.
This exercise spotlights the abs, with the side abs and deep abs assisting by tightening around the waist. Because the body stays in one compact position, the emphasis is on steady tension, precise body alignment, and smooth breathing instead of big, repeated crunches. It offers a simple, equipment-free way to explore controlled spinal curling and bracing, building awareness of how the ribs, pelvis, and core work together to hold a strong midsection.