Originally Posted by Jbreen1
See that is a common misconception. Everyone is different, but typically once you get much above 120bpm you start getting anaerobic. Your body will burn your muscle as energy (which is also why you need plenty of carbs to maintain lean muscle mass while doing cardio.) Watch bodybuilders in the gym that know what they are doing and watch how they do cardio. They walk, bike, whatever very slowly and pay attention to their heart rate. Stay at around 120bpm for at least 30 mins. and do that 4-5 times a week. You'll be amazed at how your body composition changes.
This I understand, but I don't know, I don't really look to a body builder's composition as something that a regular person should be aiming for. I've been training at a very high level for hockey for at least six or seven years. In the more recent years, I switched to a trainer whose methods I think work the best not only for myself, but for any average person as well. He focuses on extreme circuit training, not unlike the P90x stuff that seems to have taken over. We do multiple bike rides a week while he intensely monitors our heart rates. Two summers ago I got down to 6.9% body fat, and I was 5'10", 190lbs., and ripped; not to mention I was lifting more than I had ever before. Training anaerobically doesn't necessarily mean you're losing muscle mass or strength, as long as you're doing the correct workouts.