Tony DeFranco’s a smart guy. However, I am not a fan of this method.
One of the reasons is that stretching is shown to dampen Strength and Power Movements. You produce less force because the stretch reflex response is dampened.
The stretch reflex provide a “Rubber Band” effect for the Squat and other movements. When the connective tissue is stretched with a slight bounce out of the hole, it sling shot you up. You can generate up to 18% more power (force).
The Law of Specificity
The most effective stretching movement for the hip for the Squat is Squat. That is true for any exercise.
A great example of that is…
Olympic Lifters are rated as either the second or third most flexible group of athletes. That primarily due to preforming full range/full stretched movements; Full Squats, Snatches with the weight locked out behind them dramatically stretching their shoulders, etc.
Vincepac1500’s method makes some sense.
Warming up the muscle means “Heating” them up. Thus, the sauna, a warm shower, etc can be used as a passive warm up.
Warming up connective tissue. Connective tissue is similar to string cheese.
When cold it is stiff. When warmed up it is pliable. You can bend and twist easily.
Face Pulls and Shoulder Dislocates
Marko’s recommendation is a good one if…
Squat: You have shoulder flexibility in holding the bar with the Squat.
Bench Press: Research shows that Antagonist Muscles preform a “Braking Action” for Agonist Exercises.
Agonist Muscles: These are the working muscle in the Bench Press: Pecs, Anterior Shoulders, and Triceps.
Antagonist Muscles: These are the Posterior Muscle in the Bench Press: Lats, Rhomboids, etc.
Preforming an Antagonist Exercise and/or Stretching Antagonist Muscles prior to an Agonist Muscle Group increases force production (Strength and Power).
It relaxes the “Braking Mechanism” of the Antagonist Muscle allowing you to drive up with more force; pushing more weight with more power.
The objective of a Warm Up is to prepare you muscle for you top set.
You want to minimize the amount of energy you expend; saving it all for you top set.
This means you need to preform the minimal amount of warm ups. Doing so, ensure you have more strength, power and energy for your top set.
With that said, The Agile 8 might work for you. Experiment with it and see how it works for you.