For years, it was common knowledge that you are staying on target heart rate zone to burn fat efficiently. However, the last few years have seen a rise in the popularity of shorter, intense cardio workouts to burn fat. practice in your target heart rate zone came about when it was revealed that lower intensity exercise (such as walking) burns a greater percentage of fat calories during the activity. more intense work on the other hand burns predominantly carbohydrates. so people try not to train too hard, because if they did, their body will switch from burning fat, burning carbohydrates.
What most people do not realize though is that you can not rely on calories burned during an activity to lose weight. Calories burned during activity do little to help us lose fat. The critical component of successful fat loss rely on our bodies and some hormones flowing through our bodies. This is why shorter more intense workouts are better. exercises at a lower intensity only burns calories during the activity. As soon as you stop you will stop burning calories.
This is because this form of training hardly raises your body. also, less intense cardio sessions hardly stimulate the body to release hormones which will help our fat loss progress. If done long enough though, you can actually stimulate a hormone that works against us? cortisol. Cortisol is a catabolic hormone that actually eats away at muscle. This is obviously a bad thing! On the other hand, shorter, more intense cardio workouts release certain hormones, most importantly growth hormone. The amazing thing about growth hormone helps us to build muscles, and does its best to stop storing fat from our body. We will eat as much as we can and we want will not put on any fat.
(However, if you become an absolutely voracious appetite, can, at worst very slowly put on some fat.) That's why we got the hormones flowing in abundance in our bodies, sometimes a pig the day, or binge is not going to hurt our progress. yet another great benefit of intense exercise raises our metabolism substantially, for up to 48-72 hours afterwards. see how it keeps the metabolism elevated for up to 3 days later, imagine what will happen if they are cardio workouts every other day. Your body is like a fat destroying furnace! A good example is the real world to compare the difference between marathon runners and sprinters physiques. physique which do you prefer? How do you think they train? Marathon runners do hours of long distance running, whereas sprinters train intensely and explosively.
No matter what our training, our body works by adapting to stress and making it easier. thus all the training marathon runners do, cortisol is running rampant in the body, destroying muscle. It's just the body adjusting to the workload and making it easier for himself. too much muscle will only hinder the athlete's performance (and joints mind you!). That's why marathon runners have very little muscle. On the other hand, if we trained like sprinters, with short explosive bursts of our bodies is definitely want to keep muscle and burn fat. This is because we need our muscles to better perform the workouts we are subjecting the body. Also, the body, when exposed to this type of training really wants to rid his body of excess fat.
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