Melissa Koehl on Instagram: "It is important to note that a foot is supposed to pronate. It’s not supposed to have a rigid arch all the time. This means everyone’s foot should be able to be a bit “flat” a certain times. In fact, if your arch doesn’t move much at all…..a high arch that is rigid often comes with its own issues as well. It’s also possible to have a very rigid flat foot where everything is stuck in a pronated position all the time and this But when your foot is very flexible making