One of the biggest misunderstandings in bodybuilding is whether you can do cardio while trying to build muscle People think you need a massive calorie surplus to grow, and that cardio will “eat into” that surplus and stop you building muscle But there’s zero research showing that eating above maintenance helps you grow any more than just eating at maintenance If I do 15–20 minutes on the Stairmaster and burn a couple hundred calories at the end of a workout, I can literally eat a banana on the w