My preference is to do cardio 2-3x a week. I like to bike 12 miles to the lake, run 4-6 miles then bike home. Or bike either 8 miles to the pool or 12 miles to the lake, swim 1/2-1 mile then bike home.
For now, I'm not allowed to do this though. Turns out I was doing too much between my lifting and my cardio on way too little food. I started getting injured weekly, losing strength, lost ALL the muscle I'd worked so hard to build (and there was precious little of that). I haven't done any cardio since my triathlon in May. I'm skipping the one I was supposed to do in Sept for health reasons - the medical term is
malnutrition. I just miscalculated my nutritional needs. Then I'll start training for the next one that is in May '07. That only puts me a year behind my plans of doing a full ironman by age 40. I'll get it when I'm 41 instead.
I'm increasing my calories and lifting 3x a week. About the middle of September I should have enough
caloric intake in me to be able to return to cardio.
Body type? I don't know. Hard to gain muscle, easy to gain fat. Probably a hardgaining endomorph I guess.
I also believe that the difference between cutting and bulking is in the kitchen not in the cardio. I try to eat to support what I'm doing - that's why I'm not doing cardio right now - not eating enough yet. A little excess to gain, a little less to cut.