Here's the thing. Sodium has spent years being the villain. Cut the salt, watch your intake, avoid it where you can. And for people eating heavily processed food all day, that advice made sense.
But your body literally cannot function without sodium. It is one of the most important electrolytes you have. It controls fluid balance inside and outside your cells, regulates blood pressure, supports nerve transmission and enables your muscles to contract properly.
When you sweat, sodium is the primary electrolyte you lose. Not just a bit of it. A significant amount of it. And when it drops, everything suffers. Muscles cramp. Energy fades. Your brain slows down. Performance drops. And no amount of plain water fixes it, because water without sodium doesn't restore electrolyte balance. It actually dilutes it further.
More water, same problem. You've heard that before in this blog, and it keeps coming up because it keeps being true.