Hayden Panettiere

2009

CONDITION YOUR CORE

Want to tone your tummy in time for that trip to the beach? Doing a simple plank pose is "the best," says Ky Evans, an L.A.-based instructor at Pilates Plus HBV, who has taught Hayden Panettiere and Marcia Cross. "It engages your entire abdominal wall and works the whole body." To do the perfect plank, extend your arms in pushup position and keep your abs engaged – without dropping your hips. "The best part about it," says Evans, "is you can do it in your office, at home – anywhere there's a flat surface." – Alexis Chiu