This two-way dynamic hip stretch gives both your inner and outer hip muscles a nice stretch. The way you oscillate between the two lets those muscles alternate between lengthening and shortening, much like they do when you are moving on the ice. So let's check out a video example.
It is important for young goaltenders to try to achieve a nearly perpendicular planted push-leg and to focus on being patient when establishing a powerful push. Goalrobber Drill of the Week #18 (Pushing in the Butterfly)