I am trying to bulk in size before achieving a very very cut (below 10%) build. I want to bulk big before cutting because I want to have big arms and a big chest/back also with abs and not just look like a 16 year old who thinks hes the shit because he has abs but he weighs 135 lbs lol. Since this is my strategy, I haven't ever done much cardio in my life but yet kept putting on size and eating big. I used to weigh 135 in grade 11, beginning of grade 12 (end of grade 12 i was like 150 ish.) However, at 5'9, I am now 185 lbs between 12-14% bf (estimate, but I am quite lean with out much fat at all.) The problem is, I haven't done hardly any (if any, maybe like 10 times max from the age of 18-22) and I think it's starting to take a toll on my health because sometimes I just feel completely sluggish and getting off the couch is a mission (after eating steaks and blah blah blah.) I know this is making me sound like I am fat but I am not (I would definitely be completely in poor shape cardiovascular wise though.) I guess what I am asking is that... it almost seems as though if I keep it up this way, I am going to have a heart attack due to clogged arteries or whatever could happen with no cardio. Basically, picture me a 300 lbs man (bad shape wise) but with a decent build of muscles (seeing me in person, you would assume i was in good shape all around.) How important is cardio?