Some nutritionists advise eating a little something every four hours to keep blood sugar steady.
This is particularly important in late-afternoon when cravings are highest and energy levels dip. Bean dip or hummus counts as a meat substitute. Nutritionists say that snacks which combine several food groups are best because you'll feel satisfied longer and energy levels will stay higher. If you go for a handful of tortilla chips for example, add a little fresh salsa or guacamole to round it out. Of course, just because you're allowed to snack doesn't mean there aren't calories involved.