Resistance is a key factor in stimulating muscle growth and strength. For instance, during weight training, a barbell exerts a downward force that your body must resist and overcome by lifting it up. Resistance bands can be used in a similar way, offering several advantages. They're easy to transport and, in most cases, safer for beginners compared to weights.

Another significant benefit of bands is their ability to provide resistance in any direction, not just vertically as with gravity-dependent weights. This allows for a more diverse range of exercises and movements.

In the case of supinated band walks, it's the resistance of the band, oriented horizontally, that the feet have to combat. This constant battle against the band's resistance leaves the intrinsic foot muscles with no choice but to get stronger over time.