My personal view is that too much excessive cardio has slowed or stopped muscle growth and overall progress for many BB'ers. Maybe a trained athletic can handle 6 days a week but a BB'ers may find that losing muscle will go along with losing fat on such a program.
I am all for cardio, but common logic must be applied when adding it to a fat lost/muscle building BB'ing program. Marathon cardio sessions can be self defeating for most of us. Shorter cardio sessions produce better results in the long run. Including interval training. On each shorter cardio workout, try something different each time, walk/jog/walk, rope jumping, spin/normal bike riding, punching bag, spar a 3 minute round, rowing machine (very affective), etc.
Notice this with a lot of guys, that boredom can come pretty quickly with a 5 to 6 day a week cardio workout, no matter what style of cardio training you do. That may encourage burnout. Might want to pull the reins in a bit and try for 3 to 4 days(at the most) a week shorter cardio workouts. And never two days in a row. Got to get a good lifting session in there some time. Good Luck.
