Glute Kick-Back
Setup Options

Muscles
Process
Step 1: Start by drawing in the stomach and bracing the upper body while keeping the neck relaxed. Squeeze the glutes.
Step 2: Extend the working leg. Push through the heel and hinge at both the hip and the knee. The knee will not lock out until the moment your leg reaches hip level at max extension. Hold for 1 count.
Step 3: Return the leg to starting position in a controlled manner.
More
Tips: Keep a strong core throughout and control the working leg heel so that it is steady while extending. Don't lift the leg too high or let it hang too low, you want it right at hip level.
Link™ to Exterior: Handle in hands. Held at hips
Stance: On hands and knees