If you have participated in a Yoga class you may be familiar with this stretch. We are going to take a different approach to the stretch, alternating between active and passive positions, making this a very effective stretch. Try spending about 2:00 on each leg, alternating between :05 active holds and :10 passive stretch.
We recommend this stretch before squat intensive workouts or any other time your hips feel tight. It is also a good idea to squat before and after this stretch. It will give you an idea of the progress you can make.
If you are curious about how much range of motion (ROM) you need in a squat, take a look at this short video from our friend Kelly Starrett at MobilityWOD. http://www.mobilitywod.com/2012/04/how-much-rom-do-you-need-really/