Cardio/weight loss

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As blood sugar levels drop, insulin levels drop and the pancreas produces the hormone glucagon and nutrients stored in the fat cells are released to the blood and used for energy. The management of this blood sugar rise and drop is important. If blood sugar levels go to high insulin feeds the muscle cells and deposits excess into fat cells. If insulin levels go too low, the muscle cells are being under fed. A slow rise in blood sugar provides good nutrition to the muscles and a slow drop allows glucagon to take from the fat cells. Timing your exercise to this blood sugar decline allows the muscles to receive from the fat cells more effectively. It is important to never exercise without having at least one meal left in your day so that muscles can recuperate from exercise.
Insulin is highly anabolic, but too much can work against you. That is why you have to find the right balance.
Originally Posted by coolZero
This may work for you. If you do cardio as apposed to a fat burning exercise. Your blood sugar drops too fast and your Insulin kicks in, effectively stopping your metabolism. You will not burn fat when this takes place but burn muscle
^^ Can you explain the biochemistry behind the insulin statement? Do you know the role that insulin plays?

posted by ruah_23:have to disagree with you on this one lad. The body burn fat first than muscle as the last resort. Again that's look at a normal human being.
^^ That's not necessarily true. Glycogen stores come first. Yes, the body prefers to burn carbs first b/c it's easier to break down. Once glycogen stores are depleted...then what? High levels of cardio risk dipping into muscle protein for fuel, which is counterproductive to keeping your muscle mass. So you have to find the right balance. If your statement were true then we would all be at 6% bodyfat with some simple cardio. You just can't overlook the fact that there will be some loss of muscle mass There are just too many different schools of thought on the best cardio routine and when do to perform cardio. You have to find what works for YOU. I'm sure original poster just wanted some simple answers..LoL.
P.S. Stay in your target heart range