Cold Cereal

A handful of MultiGrain Cheerios or Kashi Heart to Heart offers folic acid, which can help fend off the blues. Those with low levels of the nutrient experience more symptoms of depression, a study in the Journal of Epidemiology and Community Health suggests, and a folic acid deficiency may prevent your antidepressants from working. A quick bowl of whole-grain cereal brims with iron and vitamins, and gets your metabolism humming—and it sure beats skipping breakfast altogether, since that can lead to all sorts of problems later in the day. People who skipped breakfast only once every three months were 34 percent more likely to be obese than those who didn’t, according to a study from the University of Massachusetts Medical School in Worcester. So even if your body doesn’t want it when you first wake up, find a breakfast you can live with, and eat up.