When you walk, your muscles turn on a specific energy switch called AMPK, which moves glucose transporters to the surface of muscle cells. This lets your muscles pull sugar from your blood without needing insulin, essentially turning your muscles into a sugar-absorbing machine.

This study shows that taking short walking breaks lowers blood sugar and insulin levels after eating, which supports the idea that walking helps muscles absorb glucose. However, the study doesn't measure the specific molecular steps (AMPK and GLUT4) that the claim describes - it only shows the end result of better glucose control.

This study shows that exercise (including walking) activates specific signals in muscles that move glucose transporters to the cell surface, allowing muscles to take in sugar without needing insulin - exactly what the claim describes.