Cardio is good – just not for everyone trying to gain mass! It certainly burns fat, but it burns calories, carbs and even protein as well. This will slow your mass gains down.
There’s an old saying about gaining mass that goes like this: Lay down when you can sit, sit when you can stand, stand when you can move around and drive when you can walk. Gaining mass quickly is about putting all of your energy into your muscle and the weights. Of course, if you’re getting ready for a bodybuilding competition, football season or strongman competitions, you will need to incorporate cardio (aerobic) activity into your plan to improve endurance.

