Demonstration Video 1
The ankle is the most frequently injured joint in sport, accounting for one-third of all injuries. Now no more. In this glutes engaged mode, you won't be able to dorsiflex.
NOTE: This mechanism is discovered which I call the Hyper Arch Mechanism of the foot. It is different from the windlass mechanism without raising the toe. Currently my work is being peer reviewed.
The foot has to act like a rigid lever, look at the Olympics gold medalist Stefan Holm in Slow motion, do you see what I see? The mechanism I demonstrated in video 1 above is being used here. I explain in detail how to properly configure your foot into this mode. If you are doing it inappropriately, you will get plantar fasciitis, shin splints and other serious injuries.
Demonstration video 2
Engaging glutes while standing. This is to demonstrate that there is an alternative to the notion, you can only activate and engage the glutes by doing hip abduction or hip bridge exercise, or other types of exercises. Please see the EMG(electromyography) data test for the scientific proof.
Demonstration video 3
Bouncing with Glutes engaged, I only applied a little bit of energy in the beginning hop, the rest is built up through momentum as my glutes absorbs force. Like I mentioned in the book, body is like a circuit, when the circuit is closed, the electricity flows without being lost. KEY here is my feet are NOT dorsiflexing, it might look like it is, but it's not, this is where most people get wrong.
Demonstration video 4
Newton's third law: For every action, there is an equal and opposite reaction.
If your feet are relaxed, you are not putting enough force on the ground, doesn't matter how strong rest of your body is. The feet is not a 2D platform.
I hope this video explains why and help you understand it.
Demonstration Video 5 (the funniest by far)
Barefoot running is the most natural way to move from A to B, but there are so many misinformation on the web, people use their whole foot on the ground, I demonstrate the performance difference, not to mention the injury prevention benefit of running on glutes via special configuration of the foot. The secret is NOT in the form but in the gluteus maximus activation.
Demonstration Video 6
It turns out when your foot is in the neutral mode, the shin(Tibial) muscles are relaxed as well. When speed increases and force increases, the impact force travels up from the foot, since there is no tendon or muscle to handle the load it goes to the shin bone also it's because the "forced dorsiflexion" angle redirects the force to the shin bone. I hope the lighting demonstrated the the muscle tone well so you can understand it.