Exercise tip of the day

A $1 rubber ball can help you score million-dollar legs. During crunches and other ab moves, "holding an 8- to 12-inch ball between your knees or ankles gets your inner thighs and glutes in on the action," says Brooke Siler, owner of re:AB Pilates Studio in New York City, who has worked with Kirsten Dunst. - SELF Magazine