Karen AspKAREN ASP is a freelance writer and contributing editor for Women's Day magazine. She is a co-author of Understanding Your Food Allergies and Intolerances. She also writes about health, fitness and other topics for Better Homes and Gardens,Glamour, Good Housekeeping, MSNBC.com, Martha Stewart Living, Men's Fitness, O Magazine, Prevention, Real Simple, Runner's World, Self, Shape, Women's Health and other publications. Read More Read Less