Start Here · 2 min
Bring Your Brain
Turn On the Lights. Conduct the Show.
You're not just here to work out. You're here to learn what your body can do.
Turn On the Lights
Imagine walking down the lighting aisle of a hardware store: hundreds of lamps, fixtures, and switches. Some lights are off. Some are dim. Some shine brightly.
Your muscles contain motor units: each one is a motor neuron and the muscle fibers it controls. As a muscle needs to produce more force, the nervous system generally recruits more motor units, progressing from lower-threshold to higher-threshold units. It also changes how frequently those motor neurons signal. That's one way to understand strength: recruit the lights you need and regulate their output.
Turn on the lights
Same-size signals. More recruited units and faster discharge can increase collective force.
What is a motor unit?
A motor unit = one motor neuron and all the muscle fibers it activates. The path above each lamp represents its nerve signal; an inactive unit stays off.
Another way to picture recruitment
How many people from the pub would you recruit to push a Beetle, an SUV, or a bus? Bigger demands call for more helpers. Here, 8 helpers join in the same order as the lamps—not a vehicle-force calculation.
Recruitment usually follows the size principle. High neural drive and explosive efforts can change its dynamics. This ordered display is simplified.
Conduct the Light Show
When I lived in New York City, I sometimes had to navigate crowds and closed streets around Saks Fifth Avenue's spectacular holiday light shows. It was worth stopping to watch: thousands of lights moving together as one coordinated performance.
Now imagine trying to control that entire show with your own two hands. It's not enough to turn on every light. The right lights must switch on and off, in the right sequence, with the right intensity and timing.
Movement works that way. Skilled athletes, dancers, and musicians aren't simply exerting more effort. They've learned to coordinate extraordinary complexity.
Conduct the light show
A wave of activation and release. The right groups, at the right time, with the right emphasis.
Be the conductor
Round 1 / 3Like finding the home row in touch-typing, accuracy comes before speed.
Ready when you are.
Sequence accuracy only; no timing score or measurement of your nervous system.
Practice Makes Permanent
When I was a kid, my mom made me redo messy homework. I wanted to get outside and play, so I learned to write neatly the first time.
Later, learning to touch-type meant finding the home row, practicing without looking, improving accuracy, and eventually typing without consciously searching for each key.
Movement learning follows similar principles. Repetition helps build skill, but repeating something doesn't guarantee improvement. Attention, useful feedback, manageable challenges, and opportunities to correct mistakes shape what we learn. Habits aren't irreversible, but the way we practice matters.
Bring your brain. The goal isn't just to work harder. It's to learn to move better.
The science
Muscle force depends on recruitment and discharge rate, alongside muscle size, architecture, and other factors. Training changes muscles and other tissues too—not only the nervous system. Skilled movement involves selective activation, inhibition, sequencing, timing, and context, not switching on every motor unit.
“Practice makes permanent” is a metaphor, not an irreversible rule. Useful errors, variation, attention, and feedback support learning; performance in one attempt is not the same as lasting learning.
Lamp and light-show visuals are teaching analogies, not direct visualizations of measured neural activation. The two-minute read excludes interactive practice.
Movement IQ™ | FranklyFitness®
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