Lazy days of summer? Yeah, right! Between your job, housework, social events and your kids' extracurricular activities, it can be hard to find time to take a breath, let alone cook a healthy dinner. "We always think we have more time in the summer, but that's not always the case," says Greta Podleski, co-author of the illustrated cookbook Eat, Shrink & Be Merry. Along with her sister Janet, Greta has published two other fun—and funny—cookbooks that feature quick, nutritious recipes to suit all tastes. Here are their top tips for making healthy eating fun for the whole family this summer, even when you're short on time.