Flip-flops. They offer little or no support and cause foot problems and leg pain.
High heels. Heels can cause a variety of conditions, from corns and calluses to arthritis, knee pain, and back problems.
Ugg boots. Uggs and other popular sheepskin wool boots flatten the arch of the foot and make it drop, resulting in foot, ankle, and hip problems. They may be cute, but they are not for long distances.