Muffins are always dangerous, but the word bran sitting in front of it somehow convinces people otherwise. Bran, after all, is high in fiber, minimally processed, keeps the digestive tract in order, and more. Though the bran is likely never to blame in the muffin, the high amount of sugar and canola oil is. In fact, the nutrition fact panel of a muffin (even a bran muffin) can be 400 to 500 calories, 40+ grams of sugar.
Pro Tip: Make your own muffins over the weekend in mini muffin tins. Store in the freezer and take out one or two to crumble over some plain Greek yogurt or pair with a hard-boiled egg for a quick breakfast.