"Live in a simple house, eat simple foods and keep simple relationships with local people, " Cheng says. "That's the very kind of lifestyle that goes well with nature.

The pressures of parenting are relentless, and sometimes it's easier to stick a frozen pizza in the microwave than fuss with coaxing kids to whole grains and leafy greens.

There's no need to feel guilty about having a small bowl of cereal before bed, especially if it's a low-sugar, whole-grain cereal.