Lower back/hip stretch

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[Fremen]

I'm very happy with this:

Hips & Glutes Stretch Workout

The Hips & Glutes Stretch workout strengthens and frees the hip and glute muscles.

darebee.com

 

[Laura Rainbow Dragon]

I second @Fremen 's suggestion. That workout looks great for providing an all-over hip stretch as well as both flexion and extension for the lower back, while including some active work to help strengthen the muscles that support these areas.

For some tips on executing the poses depicted in the Hips & Glutes Stretch workout to get maximum benefit, I recommend:

1. Runner's Lunge
2. Garland Pose (yogi squat)
3. Half Lord of the Fishes Pose (this one shows a variation with the lower leg bent, but the hip stretch on the top leg is very similar either way)
4. Bridge
5. One-Legged Wind Relieving Pose
6. Supine Pigeon Pose