Canola Oil This oil is exposed to high levels of refinery before it reaches your local grocery store shelves. By then, it's filled with chemicals, it's nutrient-less, and may contain some trans fat. Even though it's technically a fat and has no carbs, you still want to fuel your body with clean foods that'll make it feel good and allow it to grow stronger. Image Source: Flickr user ProcuraMed Saúde