The decrease in muscle mass with increasing fat can largely be attributed to the insulin resistance in the muscle with increasing fat accumulation.
Recent studies show that increase fat levels can directly blunt muscle protein synthesis via the insulin pathway. The more fat cells you have, the easier it is for your body to store fat. And when overeating for a significant period of time, your body increases its number of fat cells, which are impossible to remove without surgery. By adding new fat cells to your body, you’re actually making it better at gaining body fat, and worse at losing it. If you think about it, the constant bulk/cut cycle, when taken to extremes, is the same thing as a yo-yo diet, which we know is very damaging.
15% of body fat is a pretty generous number to play with. If you are a hardcore or competitive bodybuilder than I would recommend you keep your body fat around 10% all year round, even while attempting to gain size. Anything else is too high. Some interval cardio on off days can decrease insulin resistance acutely and may help with muscle gain. Try to have a big cardio session (30-60 minutes
once every 72 hours to ensure glycogen reserves are getting lower. This simple strategy helps prevent spillage from an excess of calories.
To find out more about keeping your body fat level low and gaining a lot of muscle a good tip is 21 Day Fast Mass Building, as I mentioned in the last post. Give it a try! Follow the program step by step and stop wasting time, effort and money in useless stuff!!
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