Lying on one side, place a ball under your head. Push your glutes to the back of the carriage, keeping your shins in line with the front of the carriage to create two 90-degree angles. Place your top foot in the long strap and lift your top leg as if it were a door hinge.
1B, 1Y.
Down or up.
Exhale to find hinge, inhale to lower.
Develop strength of the core, internal and external obliques, scapular stabilisers, gluteals, and hamstrings.
Ball needed.
Progression: More springs.
Regression: Fewer springs.