The first thing that breaks down is the signal. Your brain says move, your nerves fire, and your muscles are supposed to answer instantly. When key vitamins are low, that message lands like a weak radio transmission in a storm.
Think of your leg muscles like a warehouse with the power flickering. The doors still exist, the boxes are still there, but the conveyor belts slow to a crawl and every lift feels heavier than it should. That’s why a short walk can feel like a long hike when the system is underfed.
The first of the three vitamins matters because it helps turn food into raw biological fuel instead of letting it sit there like dead weight. The second helps the nerves stop misfiring, which is why cramps and restless legs often show up together like bad neighbors who always arrive as a pair.
