Refrigeration pulls moisture from bread. Wheat flour is full of starch, which breaks down and reforms as it absorbs water during baking. As the bread cools, it looses moisture and becomes hard and stale. Refrigeration only speeds up this process.
Freezing helps trap the moisture and is considered one of the best ways to store bread. Reheating the bread in the oven can help restore the moisture and make seem like it was fresh.Learn more about Food Storage