Protein bar is a synthetic concoction of sugar, seed oils, and artificial flavorings masquerading as a health food. You're not getting protein from real food, but rather from isolated, industrially-processed powders. It's a ticking time bomb of inflammation and digestive issues in a convenient wrapper.
Why trash
Most are candy bars with added protein powder. Check the ingredients — seed oils and sweeteners galore.
Try instead
Beef jerky, nuts, seeds, or hard-boiled eggs.