Energy bars don't grow on trees or within pods, but they might as well. Their popularity makes them readily available at grocery and drug stores or even the corner gas station. But they're also produced by a variety of companies that have varying levels of commitment to producing healthy products.
In short, some energy bars offer vitamins, minerals and quality sources of sustained energy that will keep you focused and alert. Others are simply candy bars in disguise. Read the label carefully to ensure you're getting carbohydrates and protein, fats and no unnecessary sugars.