It's not uncommon to see people, especially children and young adults, wolfing down muffins. A regular blueberry muffin has 425 calories ( approximately ) and about 15- 18 g of fat. Worse, some regular-bought muffins are high in trans fats, which are a bad for your waistline and heart. So, do exercise. any of these should help you shed those calories- an hour of step aerobics, 45 minutes on the cross trainer, 20 minutes on the treadmill with 40 minutes power yoga, or jogging at 3 kmph or digging in the garden ( Want to try one more muffin ??? ).