As someone with some bodybuilding experience, I can verify this. They view cardio simply as a means to increase caloric deficit by a bit on a cut, but prefer forms that preserve muscle the best, don't interfere with recovery from lifting, and don't send the body signals to improve cardiovascular conditioning since they can interfere with signals for muscular hypertrophy. Those are HIIT and LISS.  HIIT benefits from sessions being so short so as not to waste muscle since the necessary glucose for the activity can be readily taken from current glycogen stores which are topped off via carbs in the diet. It also doesn't affect lifting recovery much (depending on the type), and by mimicking weightlifting with short bouts of all-out effort followed by longer rests, there's no interference effect.  LISS benefits from just slowly accumulating caloric burn through increased activity. There's no interference   26f6  effect since it's not attempting to improve conditioning, muscle wasting is prevented since low-intensity activities like walking draw primarily on fat for fuel over glucose so no protein from muscle is needed to be broken down via gluconeogenesis to fuel the activity. And the low-intensity has no negative affect on lifting recovery (and can actually potentially improve recovery by remaining active on rest days). It's only the long distance running/jogging where you get into trouble as a bodybuilder. Doing that kind of exercise sends the body signals that it needs to improve its cardiovascular conditioning which can interfere slightly with muscle growth/maintenance (fine if you're an endurance athlete or just after general health benefits, no bueno for bodybuilders looking to maximize muscle). Also, moderate intensity running/jogging is going to pull on a moderate mix of both glucose and fat for fuel. The fat side is fine, and glucose is fine too if you have enough dietary carbs/protein that can be broken down for fuel (why endurance athletes need to eat a lot), but for a bodybuilder on a cut, this is usually not the case so there's a potential for muscle to be broken down for some fuel. And finally, there's the potential to interfere with lifting recovery (especially legs) from all the impact that running for so long can have on the legs. Now out of the three, the long distance running will definitely burn the most calories, but that's not the goal for bodybuilders trying to walk the tightrope of maintaining maximum muscle as well. Cardio just helps keep the cut moving forward through plateaus, but most of the work of creating the deficit is done by the diet. There's a reason you don't see many people who are both competitive bodybuilders and competitive endurance athletes. Those are two very different, highly-specialized adaptations for the body. All this being said, the ham from the OP is neither a competitive endurance athlete or bodybuilder. Just a sack of mayo and shit that needs to get its life together before worrying about what real humans do to stay in shape.