A lot of people assume that they must “break in” shoes by surviving weeks of rubbing that leads to blisters, calluses and/or ingrown toenails that pop up due to shoe pressure. But as we’ve stated numerous times before, you should never have to “break in” a pair of shoes. If they’re not comfortable from the start, they likely never will be. And if you’re experiencing calluses, blisters and other signs of irritation, that’s a huge, blinking billboard telling you to either stretch your shoes or get new shoes, STAT.