Warm weather is the ultimate motivation to get outside and start moving. But
don’t get burned by these hot weather slip-ups
By: Emily G. W. Chau


Photo
Credit: Thinkstock
summer exercise mistakes intro
You don’t have to be a meteorologist to know this summer is going to be a hot
one. Outdoor
exercise is a perk of warmer
days, but when temperatures skyrocket, you’re at greater risk for dehydration,
sunburn, and even chafing. But staying safe (and comfortable) in the sun
requires more than just the occasional slap of sunscreen. Here, the 11 worst
summer exercise habits that’ll leave you hot and bothered—and how to fix them.

Photo Credit: Hilmar
Hilmar
Drinking Hot Coffee Before Your Run
Sure, drinking java has been shown to help you
run
faster and work out longer, but you might want to limit your prejog joe
during the summer months. The caffeine in coffee acts as a diuretic and may
increase your chances of dehydration if you drink more than 5 cups. And, if you
like your brew hot, you could be hurting your performance. A study published in
the journal
Medicine & Science in Sports & Exercise found that
cooling your body before a run could enhance performance. People who drank an
ice-cold slushie before working out in the heat were able to run longer and felt
less exhausted than those who drank cold water.

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Wearing Too Loose Clothing
No one wants to feel like their legs are stuck in spandex sausage casing, but
sprinting around with flapping shorts can increase your chances of chafing. Add
summer sweat to the mix and you’ll exacerbate the burn. If you’re prone to
chafing, invest in BodyGlide or petroleum jelly and try wearing spandex
underneath your running shorts, says Chris Travers, an exercise physiologist at
the Cleveland Clinic. When picking out a pair, you don’t want the fit to be too
tight or too loose—both will create friction and rubbing. Take a look at the
seams to make sure that they’re not too rough or raised.
Another tip from
Travers: The stiffness of brand-new clothing can up your chances of chafing, so
give them a wash before wearing.

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Not Eating After a Workout
When it’s hot as blazes, you may find your
cravings for heavy, filling
foods falls by the wayside. The appetite-curbing power of heat holds true after
a workout, too. A study in the
American Journal of Clinical Nutrition
found that people who worked out in hotter temperatures (97°F) ate 300 fewer
calories at their next meal than those who exercised in cooler temps (77°F).
While cutting back on calories isn’t necessarily a bad thing, be mindful to
refuel properly after your workout. You should eat a snack that has both carbs
and protein within 30 minutes after your workout to replenish your glycogen (aka
quick energy) supply, as well as to stop your muscles from breaking down. For
people who don’t feel like eating at all after a summer workout, try
replenishing with liquid calories, such as a sports drink containing whey
protein, recommends Chris Mohr, PhD, RD, of
Mohr Results in Louisville,
KY. You’re getting in needed calories and rehydrating your
body.

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Wearing a Hot, Black Number
Black exercise tanks may be slimming, but they trap heat. “Darker clothes are
going to hold more heat than lighter-colored outfits, so you’re going to want to
avoid the blacks, dark blues, and dark grays when it’s sunny out,” says Travers.
While it’s true that darker clothes tend to block the sun’s UV rays better than
lighter options, sports apparel companies are making tops treated with chemicals
that add UV protection. Merino wool products also naturally block the sun’s rays
better than other fabric blends. Stay cool and still look chic with
Icebreaker’s GT Run Rush tank in ember or cove. The
lightweight merino wool shirts are wrinkle-free, naturally anti-odor, protect
you from UV rays, and are cute, to boot.

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Forgetting to Hydrate at the Pool
Playing in water isn’t the same as drinking it. “Because swimmers are in the
water, it can be easy to overlook how much water the body loses through sweat as
compared with exercise on land,” says Jeffrey Chu, a swim coach with the Three
Village Swim Club in East Setauket, NY, and a member of the USA Swimming
National Committee for Safety Education. When you can’t feel your sweat, your
body misses its cue to hydrate. Plus, because water transfers heat more quickly
than air, swimming in warm water can make it harder for you to dissipate heat
produced while working out. It’s harder for you to cool off, making it all the
more important to stay hydrated.

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Only Drinking Water During Your Workout
Whether you’re in the water or on land, you’re probably already slightly
dehydrated by the time you feel thirsty. To avoid muscle cramps and dehydration,
you need to drink up before, during, and after your sweat session. Drink 17 to
20 ounces of water 2 to 3 hours before you workout and gulp another 8 ounces
during your
warm-up. While exercising,
you should take in another 7 to 10 ounces every 15 minutes or so. When you’re
done, remember to rehydrate and weigh yourself: Drink 8 ounces in the 30 minutes
following a workout, and an additional 16 to 24 ounces for every pound of water
weight you sweated out.

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Trying to Reach a New PR
Everything tends to slow down in the summer, including your
split times. It’s for good
reason, too: Trying to reach a new PR in hot conditions isn’t just unrealistic,
it’s also dangerous. When you’re exerting yourself in warmer temperatures, core
temperatures rise faster, as does your heart rate—putting you at risk for heat
stress. [When you run on a hot day], “you perspire more, so you’re losing fluids
and electrolytes at a more rapid rate, and it’s harder to breathe when it’s
humid outside,” says Travers.
Instead of focusing solely on how fast
you’re running, tune in to how your body is feeling. Keeping track of your heart
rate might be a better indicator of how hard you’re working as compared with how
fast you’re running. If you’re going to go out for a hard run, or for speed
work, you’re better off going early in the morning or even taking it indoors.

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Going Shirtless
When you’re sweating buckets, it sure feels a lot nicer to lose the cotton
shirt, but you’re also putting yourself at greater risk for sun damage. Whether
your shirt is on or off, make sure you apply at least 1 ounce (the amount it
takes to fill a shot glass) of sunscreen on all exposed parts, recommends the
American Academy of Dermatology. Slather on a sweat-proof lotion with an SPF of
30 or higher.
For additional coverage, wear a wicking shirt, like the
TNP T by
Under Armour. “Shirts like these have sunscreen built in,” says Mohr, who is
also a spokesperson for Under Armour. “They cool you and protect you—so that’s a
win-win.”

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Sleeping In
Lazy weekends are nice, but don’t even think about pushing off your morning
sweat session by an hour during the summer. It gets too hot, too fast, and
you’re putting yourself at greater risk for heat exhaustion. Avoid exercising
outside from 11 a.m. to 3 p.m.—the hottest times of the day—and aim to head out
early in the morning or during the evening when the temperatures are
cooler.

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Credit: Thinkstock
Cycling Without a Helmet…
It can be tempting to toss your helmet when it’s humid out, but committing
this cardinal safety sin won’t actually make you any cooler. Ball State
University researchers found that
cyclists who wore helmets in
hot-dry conditions and hot-humid conditions were no hotter than those who went
helmetless. However, some helmets do trap heat—especially if you’re using one
from 6 or 7 years ago. So pick one that maximizes airflow. “Try on a helmet,
then look in a mirror,” says Don Palermini, director of marketing at Bell
Sports. “If you can see through the top few vents and out the back of the
helmet—something good channeling allows—then it's likely you'll be more
comfortable.”

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…Or Choosing the Wrong One
Contrary to what you might think, more vents in a helmet don’t equal better
cooling. Fewer large vents that connect to channels within the helmet liner help
air flow better than a lot of smaller vents that let air in, but don’t direct it
out. It also helps to match your helmet to the kind of cycling you do, says
Palermini. A good
mountain bike helmet generally
has larger, wider vents on top that help dissipate heat when you are moving at
slow speeds, like when you're climbing a steep trail. A good road cycling helmet
tends to have longer vents that do a better job at moving air through when you
are going faster.