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Walking does NOT burn a lot of calories
The lower the intensity of the activity or exercise the smaller
the number of calories burned per unit of time. For example, you
can burn more calories in 15 minutes of bicycling at a high
intensity level than you can in 45 minutes of easy walking.
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Walking does NOT result in a large increase in metabolism
Another downside to walking is that because it’s generally low
intensity it results in only a small increase in metabolism that
will only last approximately 1-2 hours after the walk. On the
other hand, metabolism increases are larger and last longer (4-24
hrs or more) when you perform high intensity cardio workouts.
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Walking does NOT deplete muscle glycogen
Low intensity exercise like walking does not deplete muscle
glycogen levels and therefore, later that day if you have excess
calories they will likely be stored as body fat whereas if you
deplete the glycogen the excess calories will primarily be stored
in the muscles.
So why then do so many fitness and health experts recommend
walking for weight loss? One reason is that people don’t want to
hear that they have to work hard so they figure some activity is
better than none. Another reason is that the body burns more fat for
fuel when exercising at an easy pace, however, the total amount of
energy used is so small that you end up burning off little body fat.
That’s also why when you choose the “fat burning” program on your
treadmill or bike it has you exercise at any easy level. Yes, you’re
burning fat, but so little that you’d have to exercise at that easy
pace for hours and hours each day.
High intensity cardiovascular/aerobic exercise is much more
effective in burning off the excess body fat. In fact, several
studies have been done to prove this. In one study they compared one
group who did moderate level aerobics for 45 minutes with another
group who performed high intensity workouts for 15 minutes. They did
before and after fitness testing including body fat analysis and
found that the group who performed the high intensity aerobics lost
nine times as much body fat!
Want more proof?
Compare the bodies of a walker, marathon runner, and sprinter. If
you are not familiar with what a sprinters body looks like, it is
very muscular and has little body fat while on the other hand the
body of a walker will likely have the opposite, little muscle and
more fat. The sprinter does little or no low intensity exercise and
does primarily short hard bursts of work while the marathoner
over strains so much they burn off both the body fat and the muscle
and that’s why they tend to look almost sickly thin.
So what should you do then if your main objective is to shed
those excess pounds of body fat?
Two things:
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Perform some form of high intensity cardio 2-4 times per week
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Stabilize blood sugar to minimize the storage of new fat
I know some of you by now are saying “I can’t do high intensity
exercise, I have a bad knee” and don’t worry, I have a solution for
you. The good news is that high intensity is all relative to you and
your current fitness level. For example, fast walking up and down
hills may be high intensity for you... it all depends. So don’t
think that you have to start running or something like that. Just
slowly start to increase the intensity of your cardio workouts while
also maybe decreasing the time because you can either work hard or
you can work long.
Also, you can make almost any activity or exercise high
intensity.... here are a few examples:
Obviously, some exercises/activities or better suited than others
but the point is if you want to burn more fat and make your workouts
as productive as possible you need to increase the intensity.
As with any changes to your fitness program be careful and don’t
over do it. Just because high intensity workouts burn more fat,
don’t think that you’ll get even better results by doing it everyday
- that will quickly lead to over-training and a loss of muscle which
will only make it even harder to burn off the fat.
So if your primary goal is fat loss, don’t waste your time
walking and instead focus on progressive, high intensity cardio to
maximize the effectiveness of your workouts. |