The human body sends signals and communicates with itself in two ways: 1) biologically, through electrical impulses and 2) chemically, through hormones. The metabolism can be considered as the balance of chemical and biological reactions.
The amount of fat or muscle that a person can obtain does not depend on nutrition or physical training, but on metabolism. Of course, metabolism can be influenced by nutrition and physical training, but all too often we think that only by eating less and training more, we can reach our ideal body image.
Sorry guys, but not considering metabolism, this formula will only lead to failure. Think of that very thin friend who eats like crap and never works, but is still thin. Or about that obese friend who is starving and never loses a pound.
Your metabolism can turn your body into a machine to burn fat, or it can make your body gain ridiculous amounts of fat. The good news is that your metabolism is always changing and is easy to control, if you know how.
The metabolism is controlled by our hormones, or more specifically the sensitivity to hormones. Fatty tissues and protein (muscle) tissues are always in a state of accumulation (anabolic) or decomposition (catabolic). The hormones travel to the tissues and bind to the receptors.
The hormones can be anabolic (testosterone, growth hormone, insulin) or catabolic (cortisol). The hormonal effectiveness is determined by the amount of hormones released and the sensitivity of the tissues.
You want your tissues to be very sensitive. This will allow a small amount of hormones to do a great deal of work. If your tissues are not sensitive, a large amount of hormones will be released and not much work will be done. This is where you can get in trouble.
It can be considered as 10 men doing the work of 1000 men, or 1000 men doing the work of 10 men. When you have a lot of hormones without work to do, they will begin to have harmful effects.
Insulin is by far the most important hormone when it comes to metabolism. Insulin is the most anabolic and anti-catabolic hormone in the body, and luckily for us it is the easiest to control.
When we eat, glucose (blood sugar) is released into the bloodstream. Then insulin is activated to carry this glucose to the tissues. If our tissues are not sensitive to insulin at that time, glucose and insulin levels will remain elevated for a prolonged period of time.
Guess what, this is the profile of a type II diabetic. It is very easy to enter this state, even for non-diabetics. It is also very easy to avoid this state, if you know how. This is the worst absolute state it could be. This is when the greatest amount of fat is stored and when the body's organs and defenses are most vulnerable.
You should always have low levels of insulin release (except after exercise) and very sensitive tissues. Low insulin sensitivity also leads to low lipid sensitivity, which can lead to a complete list of other problems.
So how can we make our metabolisms work for us? Through diet, supplements, resistance training and cardiovascular training, we can influence tissue sensitivity. In addition, by having more lean muscle mass and less fat, metabolism can be improved.
Studies have shown that thinner subjects have greater tissue sensitivity and greater metabolism. So, the goals of metabolism training are to improve tissue sensitivity and increase lean muscle mass.