If you're one of those people who crave carbs in the late afternoon, pick up a pack of Fig Newtons. Carbs can help some people's brain produce serotonin, a neurotransmitter that regulates moods, explains Judith Wurtman, PhD, a co-author of The Serotonin Power Diet
. Sweet and starchy snacks like these Newtons (40 grams carbs)
are easy to digest, and the dried figs are densely packed with potassium as well as natural sugar.