Stuart McGill

You're paying for stiffness of the frame. That's what a really elite- I did not know that. Yeah. So when a person pushes on the pedal, the frame doesn't flex because that would be an energy leak. You pay for a very stiff frame. So every ounce of force that you apply to the crank handle to propel you forward propels you forward instead of being wasted and bending the frame.

You're paying for stiffness of the frame. That's what a really elite- I did not know that. Yeah. So when a person pushes on the pedal, the frame doesn't flex because that would be an energy leak. You pay for a very stiff frame. So every ounce of force that you apply to the crank handle to propel you forward propels you forward instead of being wasted and bending the frame.

You're paying for stiffness of the frame. That's what a really elite- I did not know that. Yeah. So when a person pushes on the pedal, the frame doesn't flex because that would be an energy leak. You pay for a very stiff frame. So every ounce of force that you apply to the crank handle to propel you forward propels you forward instead of being wasted and bending the frame.

The same way the cyclist will lock in on the bike, they'll squeeze the saddle between their legs, lock into the bars, lock their core down so that when they create power through the hips and through the legs, it's transferred to the power. It isn't transferred to bending their willowy body. That is very different from the neurology and the mechanics of a swimmer. Now let's run.

The same way the cyclist will lock in on the bike, they'll squeeze the saddle between their legs, lock into the bars, lock their core down so that when they create power through the hips and through the legs, it's transferred to the power. It isn't transferred to bending their willowy body. That is very different from the neurology and the mechanics of a swimmer. Now let's run.

The same way the cyclist will lock in on the bike, they'll squeeze the saddle between their legs, lock into the bars, lock their core down so that when they create power through the hips and through the legs, it's transferred to the power. It isn't transferred to bending their willowy body. That is very different from the neurology and the mechanics of a swimmer. Now let's run.

To run, the most efficient runners... store and recover elastic energy in tuned springs. A wonderful book to read is The Lost Art of Running by Shane Benzie, who studied the Kenyan runners and how they store and recover elastic energy with each stride, almost the same way as a kangaroo would.

To run, the most efficient runners... store and recover elastic energy in tuned springs. A wonderful book to read is The Lost Art of Running by Shane Benzie, who studied the Kenyan runners and how they store and recover elastic energy with each stride, almost the same way as a kangaroo would.

To run, the most efficient runners... store and recover elastic energy in tuned springs. A wonderful book to read is The Lost Art of Running by Shane Benzie, who studied the Kenyan runners and how they store and recover elastic energy with each stride, almost the same way as a kangaroo would.

A kangaroo is more efficient when it hops versus plodding along using eccentric concentric muscle contraction. So again, the polar opposite of a swimmer. It's a very tuned stiffness. The most efficient runners for the third leg of the triathlon pre-stiffen. they have a pre-contraction of the muscle.

A kangaroo is more efficient when it hops versus plodding along using eccentric concentric muscle contraction. So again, the polar opposite of a swimmer. It's a very tuned stiffness. The most efficient runners for the third leg of the triathlon pre-stiffen. they have a pre-contraction of the muscle.

A kangaroo is more efficient when it hops versus plodding along using eccentric concentric muscle contraction. So again, the polar opposite of a swimmer. It's a very tuned stiffness. The most efficient runners for the third leg of the triathlon pre-stiffen. they have a pre-contraction of the muscle.

So when the foot hits the ground, they're already storing the elastic elements and they get that back for free. But if the springs were not tuned and they'd stretched away their muscles just to be passive elements, which serves them very well in the swimming element, think of doing a pogo jump. So you're just pogoing through the ankles now. If you had no tone in the legs,

So when the foot hits the ground, they're already storing the elastic elements and they get that back for free. But if the springs were not tuned and they'd stretched away their muscles just to be passive elements, which serves them very well in the swimming element, think of doing a pogo jump. So you're just pogoing through the ankles now. If you had no tone in the legs,

So when the foot hits the ground, they're already storing the elastic elements and they get that back for free. But if the springs were not tuned and they'd stretched away their muscles just to be passive elements, which serves them very well in the swimming element, think of doing a pogo jump. So you're just pogoing through the ankles now. If you had no tone in the legs,

you would just flop into the ground and you would have to use concentric eccentric muscle contraction. But if you stiffened too much, you're now a piece of iron and you won't be able to jump either, but you'll get a beautiful resonance, a beautiful pogo when you have the tuning just right. So when a muscle contracts, it creates force.

you would just flop into the ground and you would have to use concentric eccentric muscle contraction. But if you stiffened too much, you're now a piece of iron and you won't be able to jump either, but you'll get a beautiful resonance, a beautiful pogo when you have the tuning just right. So when a muscle contracts, it creates force.

you would just flop into the ground and you would have to use concentric eccentric muscle contraction. But if you stiffened too much, you're now a piece of iron and you won't be able to jump either, but you'll get a beautiful resonance, a beautiful pogo when you have the tuning just right. So when a muscle contracts, it creates force.

We all know this, but people don't appreciate you're also tuning the stiffness. If I maximally contract my muscles, I can't move. So athletes have to tune muscle if they're impacting athletes, but they also have to pulse and relax.

We all know this, but people don't appreciate you're also tuning the stiffness. If I maximally contract my muscles, I can't move. So athletes have to tune muscle if they're impacting athletes, but they also have to pulse and relax.