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stop his
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FOR
THE WOMEN WE HAVE THE ZODIAC MAN!
This is a source of great advice for winning the heart of any man
of the Zodiac.
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Cold
Weather Workouts
By Michael Stefano
As a trainer and firefighter in New York City
for the past nine-teen years, I've experienced many frigid, New York City
winters. I've learned how important it is to protect yourself against the
elements, whether battling a tenement fire at 3 AM, when the outside air
temperature is hovering at zero degrees, or just jogging over the piles of
snow in Central Park, you've got to take measures to protect yourself.
Hypothermia, or the general cooling of the human
body, is the technical term for what we refer to as freezing. Mild hypothermia
can occur when your core body temperature is between 96° and 99°
F, and you'll begin to shiver. Intense shivering (shivering increases body
heat producton by four to five times) will set in from about 91° to
95°, and will become less intense at temperatures below 90°. Beware,
at the point when shivering begins to diminish, you're headed into severe
hypothermia, a possibly life threatening condition.
Severe Hypothermia
a.. Shivering becomes less intense
b.. Muscular rigidity sets in
c.. Unclear thinking, irrational behavior
d.. Possible amnesia
e.. Move to a warmer atmosphere
f.. Seek medical attention immediately
Exercise and Hypothermia
As long as core body temperature is maintained,
and sufficient insulative clothing is worn, it is rarely too cold to exercise.
By the time inhaled cold air reaches the lungs it's already warmed up to
a safe temperature. However, if you suffer from asthma be advised that breathing
cold air can trigger an attack. Luckily the body is able to produce enough
heat to maintain core body temperatures under relatively severe cold conditions.
Aerobic exercise actually makes this job easier. Three quarters of the energy
produced by the body during exercise is converted to heat. Aerobic capacity
seems to be unaffected by cold when core body temperatures are
maintained.
If core (and muscle temperatures) do drop,
cardiovascular endurance is similarly reduced. The colder temps in the muscles
themselves seem to set off a greater anaerobic metabolism, producing more
lactic acid and associated muscle burn. This results in an overall reduction
in strength and power that can produced in muscle tissue in severely cold
weather.
Wind Chill Index
When headed outdoors for a workout we need to
pay attention to the Wind Chill Index instead of just consulting outside
air temperatures. Wind increases the rate at which insulating air surrounding
the body is whisked away, replaced with colder outside air. Consult a Wind
Chill Index (WCI) before excerising outdoors in cold weather. As a general
rule, use caution when headed out with WCI of less than minus 20° F.
Anything under minus 70° F is considered too dangerous to exercise.
Proper Clothing
Use up to four layers with a ventilation layer
next to the skin. One or two layers of insulation under a protective outer
shell works best. Be sure to wear gloves and a hat. Large amounts of heat
is lost through the top of the head. Keep the neck and throat area covered
with a scarf or turtleneck.
Other Options
Cold weather is no reason to skip your workout,
but if you feel it's too cold to head outside, bring the workout indoors.
Consider a treadmill or other piece of exercise equipment. Circuit training
in the gym, or at home using dumbbells, is another great way to get an aerobic
workout without having to step foot outside.
About the Author:
Resources: Brady Emergency Care, 6th
edition, Prentice Hall / ACE Certified News (jan.02), Taking the Chill Out
of Winter Workouts, Bryant
Michael Stefano is the athor of The
Firefighter's Workout Book, and managing editor of
www.firefightersworkout.com
His articles have appeared on such internet giants as Yahoo!, Americal On
Line, and eDiets.com.
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