Lying Alternate Frog Kick

Lying Alternate Frog Kick Exercise Description

The lying alternate frog kick is a bodyweight, supine hip-dominant leg-lowering variation that emphasizes controlled hip flexion and lumbopelvic stability. You’ll maintain a “frog” position (knees abducted and externally rotated) with one leg while alternately extending the other. Primary movers are the hip flexors (iliopsoas, rectus femoris); the abdominal wall and obliques stabilize the pelvis and prevent lumbar extension. The adductors and deep hip external rotators help hold the frog position, while the gluteal and lateral hip musculature assist with pelvic control. This drill builds precise control of the hip through a long range while keeping the spine quiet.

Muscle Groups: Hips
Target Muscles: Iliacus, Psoas Major
Assisting Muscles: Rectus Femoris
Stabilizing Muscles: Adductor Longus, External Obliques, Internal Obliques, Piriformis, Rectus Abdominis
Body Area: Lower Body
Body Parts: Hips, Legs, Upper Legs
Body Surface: Front
Body Symmetry: Unilateral
Equipment: Bodyweight
Exercise Patterns: Other
Exercise Type: Strength
Functional Grouping: Hip Flexors
Joint Involvement: Multi-joint
Muscle Location: Hip Flexor
Movement Direction: Other
Muscle Position: Anterior
Gender: Female

How To Do The Lying Alternate Frog Kick Exercise

‘- Lie on your back with arms by your sides, palms down; head and ribcage relaxed on the floor.
– Set a light posterior pelvic tilt (ribs down, belt buckle toward nose) so your low back stays gently in contact with the floor.
– Bring hips and knees to about 90° flexion. Touch heels together, let knees open comfortably to the sides (frog position).
– Brace your abdomen as if preparing for a cough; keep the pelvis still throughout.
– Extend the right leg by straightening the knee and reaching the heel away, hovering a few inches above the floor without arching your back.
– Keep the left leg in the frog position—knee bent, knee open, heel near the midline.
– Return the right leg to the frog position under control, then alternate to the left.
– Move smoothly; keep toes relaxed, neck neutral, and ribs from flaring.
– Stop each rep at a pain-free range; prioritize pelvic control over how far the leg reaches.

Lying Alternate Frog Kick Tips

‘- Keep your low back gently pressed into the floor with a light posterior pelvic tilt (ribs down, belt buckle toward nose).
– Maintain heels touching and knees comfortably open to the sides to hold the frog position.
– Brace your abdomen as if preparing for a cough and keep your pelvis still as your leg moves.
– As you extend the working leg, straighten the knee and actively reach the heel away from you.
– Hover the extended heel just a few inches above the floor and avoid letting your back arch.
– Keep the non-working leg in the frog position with the knee bent, knee open, and heel near the midline.
– Move the leg out and back under control, avoiding any rushed or jerky motion.
– Keep your toes relaxed, neck neutral, and prevent your ribs from flaring as you alternate legs.
– Stop each rep within a pain-free range and prioritize keeping the pelvis controlled over how far the leg reaches.

Lying Alternate Frog Kick Beginner Introduction

The lying alternate frog kick is a floor-based bodyweight exercise that blends hip mobility with core control. In this movement, the body rests on the back while the legs move in an alternating pattern: one leg lengthens toward straight while the other stays bent in a wide, “frog-like” position. The action centers on lifting and lowering from the hips rather than from the lower back, so the legs travel through a long arc while the trunk remains calm and steady.

This drill highlights the hip flexors at the front of the hips and thighs, while the abs and side abs support a stable midsection. Muscles around the inner thighs help sustain the open-knee position, and the glutes and outer hips contribute to smooth, controlled motion of the pelvis. Because the spine stays quiet as the legs alternate, the exercise emphasizes careful, deliberate movement rather than speed or momentum, making it useful for building awareness of how the hips and core work together.