5. Not-So-Fresh Feet

THE EXPERT: Simone Spigner
Tennis coach, 49, New York City

Running around after mini tennis hopefuls in the blazing Harlem sun keeps Spigner on her toes—but by the end of each day, her dogs are barking. She wears absorbent, moisture-wicking Adidas Superlite Socks ($18 for six-pack; adidas.com) to cut down on perspiration and alternates her sneakers every day. She also massages her feet with a few drops of lavender essential oil at night. "It helps me relax and wind down," Spigner says. "I apply it right before going to bed." Sweet dreams!