There's a second protein in the body, called MCT12, that can carry creatine into cells — kind of like a backup delivery truck. Unlike the main one, it doesn’t need salt or other chemicals to work, and it actually works better when things are more alkaline.

Imagine creatine needs to get into cells through a special door that only opens one way. When creatine teams up with salt ions (sodium and chloride), the door becomes much less likely to let creatine slip back out, so it keeps moving in even when there’s already a lot of creatine inside the cell.

Your body has a special door called CRT-1 that lets creatine into muscle cells by using salt particles (sodium and chloride) as helpers — it doesn’t need potassium to do this, and it can pull creatine in even when there’s already a lot inside the cell.

Your muscles use a special door called SLC6A8 to let creatine in, and this door only works when there’s more sodium outside the cell than inside — like a pump that needs salt to open.

Your brain, heart, and muscles need a special helper molecule called MCT-12 to quickly get enough creatine inside them, because the usual one (CRT-1) is too slow to keep up with what your body needs.

Your body has a special gate called CRT-1 that pulls creatine into muscle and brain cells by using salt particles as helpers, so your cells can store energy for when you need it most—like during a tough workout or thinking hard.