In simple terms, your metabolism is the chemical process by which
your body converts food calories into usable energy. Specific
proteins break down food into compounds and the energy from these
compounds can either be stored in body tissues or utilised to power the
body. The process of storing energy in order for the body to
maintain itself and grow is known as anabolism or constructive
metabolism. Catabolism, also known as destructive metabolism, is
the process whereby carbohydrates and fats are broken down on order to
release energy and fuel the body.
The speed of your
basic metabolic rate (the speed at which they burn calories while
resting) can vary according to factors such weight, level of fitness,
muscle mass and even your genetic makeup. If you have a slow
metabolism you may feel sluggish and low on energy, and find it harder
to lose weight. However, there are ways to speed up your
metabolism, the most effective being to do more exercise.
Our bodies uses up calories all the time, even when we are at
resting. But when you exercise the extra exertion causes your
metabolism to speed up, thus burning more calories. Your
metabolism will even carry on working at a higher speed in the hour or
so after you have stopped exercising.
Even more importantly,
exercise builds muscle mass, and muscle tissue burns many more calories
than fat tissue. This will give you a higher basic metabolic rate
and make it easier to lose weight. This is one of the reasons why
exercise is such a good way of kick starting weight loss if you've hit
a bit of a dieting plateau. Vary your training schedule by
including resistance training and high intensity cardio activity in
order to stop your body from becoming too accustomed to one regime.
Although exercise is undoubtedly the best way to boost your
metabolism, there are a few other tricks to help improve it. These
include:
Your metabolism is not a fixed entity and can slow down as well as
speed up. As we age, our metabolism naturally slows by around 2% every
decade, but this can helped by maintaining fitness levels and muscle
mass as far as possible.
Excess dieting will also have a
detrimental effect on your basic metabolic rate. This is because if
you dramatically cut down on the amount of food you consume your body
will go into 'starvation mode', whereby it protects its fat stores and
becomes extremely efficient at using calories from muscle tissue. In
turn, this process depletes your muscle mass, therefore lowering your
basic metabolic rate making it harder than ever to shift those extra
pounds. This explains why crash dieting never works as a long-term
solution to weight loss; your metabolism slows down and simply hangs on
to all the calories you consume once you start eating normally again.
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Did you know In a recent survey of 274 Nutracheck Members 2 in 3 people found our food diary approach more successful than their previous weight loss attempts!!
Dr Ian Campbell
A leading UK weight loss expert & Nutrachecks' medical advisor
Angela Dowden
Nutrition advisor & regular expert press columnist
Vicky Hall
is our consultant nutritionist
Kelly Marshall
Nutrachecks' fitness expert & coach to Olympic athletes