The path to a Zero Belly isn't about deprivation, it's about making good food choices that support your health, your immune system, your gut bacteria, and give you lasting energy. Snacking is actually an essential part of the Zero Belly plan for two reasons: snacking keeps your metabolism stoked and chugging along, even if you go hours between meals, and because, on a psychological level, cutting out those feelings of deprivation that are part and parcel of most diets makes it easier and more enjoyable to stick to an eating plan and makes it less likely that you'll binge. In fact, a study in the Journal of the American Dietetic Association found that people who ate an afternoon snack consumed more fruits and vegetables on average than those who abstained. Whether your tastes tend toward sweet treats or rich, savory foods, we've got a snack that will satisfy your hunger while keeping you on the path to the body you've always wanted.
In another study of blue light, researchers at the University of Toronto compared the melatonin levels of people exposed to bright indoor light who were wearing blue-light–blocking goggles to people exposed to regular dim light without wearing goggles. The fact that the levels of the hormone were about the same in the two groups strengthens the hypothesis that blue light is a potent suppressor of melatonin. It also suggests that shift workers and night owls could perhaps protect themselves if they wore eyewear that blocks blue light. Inexpensive sunglasses with orange-tinted lenses block blue light, but they also block other colors, so they're not suitable for use indoors at night. Glasses that block out only blue light can cost up to $80.