If you've ever wasted any sort of time on a bodybuilding forum than you have seen the countless posts on, "Should I do cardio if I am trying to build muscle?"
The debate will never end and typically results in you destroying your frame - that once had potential - by attempting to bulk up but getting fat instead.
Look at cardio as a tool to help you get muscular without getting fat and a pot belly at the same time. Bulking up does NOT have to equal getting fat.
Watch this four minute video that teaches how Vince DelMonte incorporate cardio into a muscle building routine and address this confusion
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The main reason his addressed this issue is because he is sick and tired of you completely losing your waist line, getting a double chin and gaining weight that only makes you look "bulky" and not ripped and muscular because you listened to someone who told you to not do cardio if you want to build muscle.
Your waist line will thank you for watching the above video.