The right running shoes can really make or break your workout—you need the right type of support and a great fit in order to avoid injury. Go to a reputable store and let the experts guide you, but expect to try on quite a few pairs. “Beginners need to be properly assessed in terms of biomechanics,” says Deere. Are your feet wide? Narrow? Do you have bunions? Do your feet pronate (roll inward)? “The sales expert will look at you walking in them,” he says.