Also known as: frog stretch, frog rock, deep frog stretch, quadruped frog, frog hip opener

What is Frog Mobility Rock?

The Frog Mobility Rock is an easy quadruped mobility exercise that opens the hips and targets the quadriceps. You set knees wide with toes turned outward, hinge at the hips and rock your weight forward and back while keeping a neutral spine.

How to Do Frog Mobility Rock

  1. Setup quadruped: Begin on hands under shoulders and knees under hips; spread knees wide and turn toes outward as comfortable for the frog position.
  2. Find neutral spine: Brace the core and lengthen the spine; keep the neck neutral and avoid rounding the lower back to protect lumbar alignment.
  3. Hinge at hips: Shift hips back slightly then hinge forward until forearms can touch the floor, keeping weight balanced between hands and knees.
  4. Rock slowly: Gently rock your weight forward and backward using the hips as the mover; maintain steady tempo and avoid jerky motions.
  5. Breathe and monitor: Inhale to prepare and exhale through movement; relax into end range and stop if you feel sharp pain or discomfort.

Muscle Groups

Quadriceps

Description

Start in a quadruped position, hands under the shoulders, knees under the hips.
Supporting yourself with your arms, set your knees apart, as wide as you comfortably can, toes should face outward.

Keep a neutral spine, & hinge forward at the hips, so you can bring your forearms to the floor. Elbows shoulder be stacked under the shoulders.
Try to relax and breathe in this position.

You can slowly rock your weight backwards & forwards. Focus keeping the movement to your hips, and your spine should remain neutral.
Movement Group: Mobility
Equipment: None (bodyweight only)

Progressions and Regressions

None

Frequently Asked Questions

What are the benefits of Frog Mobility Rock?

Frog Mobility Rock increases hip external rotation and abduction range, targets quadriceps and anterior chain, and improves squat depth and hip comfort. It's useful as a warm-up or mobility drill to reduce hip tightness and support safer lower-body movements.

What common mistakes should I avoid?

Common mistakes include rounding the spine, forcing knees wider than shoulder mobility allows, placing too much weight on the wrists, and rocking too fast. Focus on neutral spine, controlled tempo, and stopping if you feel sharp pain to avoid injury.

How can I progress or regress this exercise?

Regress by narrowing knee width, using cushions under knees, or limiting hinge depth. Progress by increasing end-range hold time, adding small pulses, or combining with loaded movements like goblet squats to strengthen the anterior chain and deepen hip mobility.