Be kind to your feet.
You wouldn't buy new shoes for your kid without measuring his feet -- you know he's growing rapidly, feet included. But did you know that your shoe size isn't permanent either? "Feet can lengthen and widen over time -- especially after pregnancy," says James R. Christina, MD, director of scientific affairs at the American Podiatric Medical Association (APMA). Unfortunately, 65 percent of women haven't had their feet measured in at least five years, according to an APMA survey. "If you've been walking around in tight shoes, you could end up with corns, calluses, and ingrown toenails." Wearing snug shoes can even lead to hammertoes, a deformity of the joints in your toes.