Really, there isn’t all that much difference between sports bars advertised as either protein bars or bars, and the two terms are very similar. Just know that “protein bars” don’t necessarily have more protein packed into them than an energy bar, and their ingredients can also vary widely. One isn’t necessarily better than the other, and the two bars share many of the same ingredients. Since you won’t get that much of a difference between a protein bar and an energy bar, just make sure you purchase an energy bar or protein bar that offers you the athletic boost and dietary ingredients you need.