Health

Story Tools: PRINT | Text Size: S M L XL | REPORT TYPO | SEND YOUR FEEDBACK

Cooling off before heating up

Comments (3)
By Peter Hadzipetros

Heat alerts, smog alerts. Welcome to summer in the 21st century and more excuses to sit around and not get exercise.

"It's just too damn hot" is a slightly better excuse for not getting out and maintaining your fitness than "I've got to find out who gets voted off tonight."

Well, most of the folks who study risks and benefits of exercise say the benefits of getting your butt off the couch on a hot day outweigh the risks, as long as you're a healthy and somewhat normal person.

If you're not prepared, there are some pretty nasty things that exercising in the heat can do to you.

Still, there are things you can do to cope. There's the easy stuff, like limiting your outdoor exercise time to those parts of the day when heat and smog levels are lowest — before seven in the morning and after eight at night.

And then there's cooling off. Before you exercise. Several studies have shown that cooling yourself before exercise will improve your performance in hot weather.

One study found that for endurance performance — anything over half an hour — you can do much better by cooling down your body before exercising than by doing a traditional warm-up. Participants in the study wore a cooling vest for 20 minutes before getting on a treadmill and running at progressively faster paces until they were exhausted. People who wore the vests had measurably lower heart rates and body temperatures than those who warmed up.

And it's not just for runners. A study that followed squash players came to similar conclusions.

Despite the evidence that pre-cooling works, you'd be hard-pressed to find anyone who will recommend that you cool off before working out in the heat. Which is too bad, because you're doing your body a lot of good by slogging through the heat, even if it feels like you're barely able to move your feet.

If you want to make it slightly more bearable, you could soak in a cold tub before heading out.

I like to stick close to that big lake that keeps the U.S. a comfortable distance from Toronto — and hope for a bit of a breeze. Makes lying in the hammock and sipping on a cool beverage a little later that much more enjoyable.

« Previous Post | Main | Next Post »

This discussion is now Open. Submit your Comment.

Comments (3)

Jim

Timmins

As long as you dont consider being sedentary, obese, & dull as a hazard... Sitting on the couch, watching TV is the only non-injurious activity one can do.
Growing up in a hockey-crazed area, my lack of dental work and facial scars are a testament to the fact that I never did master that sport (the glowing red circles on my thighs from taking a tennis ball @ -20deg eventually went away). Almost every other sport/passtime that I took up eventually left its mark on my body (literally): Multiple road rashes from rollerblading; lost toenails/raw nipples from running; twisted knee/broken finger from rugby; dislocated rib from a well paced squash ball; chewed up shins from mountain biking, chronic sore elbow/occasional hangovers from golf; and a very unique and intensely painful raw spot from road biking.
That being said; I like my cuts, bruises, scars, abrasions, and aches. I earned them. They remind me that I prefer to participate in life, rather than just be a passenger.

Posted July 16, 2007 10:13 AM

Angie

Burlington

Hydrate, Hydrate, Hydrate!!! First things first stop eating bonbons and get off the couch.

Posted July 5, 2007 11:01 AM

Darrow

Oakville

This is the time of year for the early morning, or the late night run. I went out this morning. The mild wind was cooling, and the absence of direct sunlight beaming down was a relief. I have some bright coloured shirts and a reflective vest for after-dark runs for this season. After 9:30-10 pm, the streets are quieter, and often cooler. Just dress for visibility, and leave the ipod at home!

Posted July 4, 2007 11:23 AM

« Previous Post | Main | Next Post »

Post a Comment

Disclaimer:

Note: By submitting your comments you acknowledge that CBC has the right to reproduce, broadcast and publicize those comments or any part thereof in any manner whatsoever. Please note that due to the volume of e-mails we receive, not all comments will be published, and those that are published will not be edited. But all will be carefully read, considered and appreciated.

Privacy Policy | Submissions Policy

Back of the Pack »

About the Author

Peter HadzipetrosPeter Hadzipetros is a producer for the Consumer and Health sites of CBC News Online. Until he got off the couch and got into long distance running a few years ago, he was a net importer of calories.

More from Peter Hadzipetros »

Recent Posts

On leading horses to water
Peter Hadzipetros
Monday, July 16, 2007
Another day, another toenail
Peter Hadzipetros
Tuesday, July 10, 2007
Cooling off before heating up
Peter Hadzipetros
Friday, June 29, 2007
Growing up cheating
Peter Hadzipetros
Friday, June 22, 2007
Don't you get bored?
Peter Hadzipetros
Tuesday, June 19, 2007
Subscribe to this blog

Recent Comments

As long as you dont consider being sedentary, obese, & du...
Cooling off before heating up
Hydrate, Hydrate, Hydrate!!! First things first stop eati...
Cooling off before heating up
This is the time of year for the early morning, or the la...
Cooling off before heating up

Archives

July 2007 (2)
June 2007 (5)
May 2007 (3)
April 2007 (6)
March 2007 (3)
February 2007 (6)
January 2007 (7)
December 2006 (2)
November 2006 (3)
October 2006 (3)
September 2006 (4)
August 2006 (5)
[an error occurred while processing this directive]
Story Tools: PRINT | Text Size: S M L XL | REPORT TYPO | SEND YOUR FEEDBACK

World »

Torso's DNA matches journalist believed killed in amateur submarine
A headless torso found on a beach off Copenhagen is identified as that of missing Swedish journalist Kim Wall, who is believed to have died on an amateur-built submarine earlier this month.
Hey Macarena: Dancing teen arrested in Saudi Arabia
Police in Saudi Arabia arrest and later release a 14-year-old boy who was filmed dancing to the '90s hit song Macarena at an intersection in the Red Sea city of Jeddah.
Typhoon Hato leaves 3 dead in Macau, devastates Hong Kong
A powerful typhoon causes at least three deaths in Macau, China, and flooding, injuries and evacuations in nearby Hong Kong.
more »

Canada »

'Disgusting behaviour' caught on video at fast food restaurant in Red Deer, Alta. video
A Carl's Jr. franchisee has been caught on video violating at least 10 food safety regulations. Jack Webb co-owns the fast food restaurant in Red Deer, Alta. CBC News has exclusively obtained the video that got him temporarily tossed from his own kitchen.
Live Blog Judge who wore Trump hat in court says he wanted to lighten the post-election mood
A Hamilton judge who could be suspended or dismissed for wearing a Donald Trump hat in court told a hearing in Toronto he was "stunned" by last November's U.S. election outcome, and was just trying to make people laugh the next day.
Tornado rips through Lachute, leaving up to 40 homeless
Environment Canada has confirmed that the damage to residences in Lachute, Que., that forced some residents to leave their homes was, in fact, caused by a tornado.
more »

Politics »

Analysis As Ottawa mulls shorter election campaigns, here's how they would have changed history
The Liberals are considering limiting the length of election campaigns, which could have caused big differences in the results of some recent votes.
Analysis How should Canadians respond to the alt-right? video
Protesting with cheesecake might seem silly. But a question is suddenly relevant across North America in the wake of Charlottesville: What is the best way to respond to a white-supremacist rally?
Parliamentary committee ponders how to cope with nuclear threat from North Korea
A summer of sabre-rattling with North Korea appears to have put a dent in the Liberal resolve to keep Canada out of the U.S. ballistic missile shield.
more »

Health »

Sorry - we can't find that page
 
CBC.ca

Sorry, we can't find the page you requested.

  1. Please check the URL in the address bar, or ...
  2. Use the navigation links at left to explore our site, or ...
  3. Enter a term in the Quick Search box at top, or ...
  4. Visit our site map page

In a few moments, you will be taken to our site map page, which will help you find what you looking for.

more »

Arts & Entertainment»

Billy Joel dons Star of David during NYC show encore
Billy Joel wore the bright yellow Star of David with his black suit during an encore at Madison Square Garden this week.
Thomas Meehan, Tony-winning writer of Annie, dead at 88
Three-time Tony Award-winning book writer Thomas Meehan, best known for transforming the Little Orphan Annie cartoon strip into the smash Broadway musical Annie, has died at age 88.
Ticketmaster accused of misleading and overcharging fans with platinum seats
A Calgary mother says pricey platinum-level tickets she bought through Ticketmaster to see Bruno Mars turned out to be anything but 24-karat magic.
more »

Technology & Science »

With eclipse 2017 complete, get ready for eclipse 2024 video
A solar eclipse will be viewable from North America on April 8, 2024. Here are some tips if you want to get ready now.
New magnet strength record broken by U.S. lab
A U.S. lab has reclaimed its status as home to the world's strongest resistive magnet after previously losing the record to China.
Walmart partners with Google on voice-activated shopping
The world's largest retailer said Wednesday it's working with Google to offer hundreds of thousands of items from laundry detergent to Legos for voice shopping through Google Assistant. The capability will be available in late September.
more »

Money »

Royal Bank hikes dividend after posting $2.8B quarterly profit
Royal Bank of Canada is reporting nearly $2.8 billion of net income for its fiscal third quarter and an unexpectedly large increase to its quarterly dividend.
Canada being asked to give up NAFTA Chapter 19 arbitration system in renegotiation
Canada is being asked to give away the NAFTA arbitration system, including the panels created to scrutinize dumping duties under Chapter 19 and, separately, the Chapter 11 system for companies suing governments.
Energy Transfer sues Greenpeace over Dakota Access pipeline
Energy Transfer Partners LP on Tuesday sued Greenpeace and other environmental groups, accusing them of launching an 'eco-terrorism' campaign aimed at blocking the Dakota Access Pipeline, the center of months of opposition by Native American and green groups.
more »

Consumer Life »

Sorry - we can't find that page
 
CBC.ca

Sorry, we can't find the page you requested.

  1. Please check the URL in the address bar, or ...
  2. Use the navigation links at left to explore our site, or ...
  3. Enter a term in the Quick Search box at top, or ...
  4. Visit our site map page

In a few moments, you will be taken to our site map page, which will help you find what you looking for.

more »

Sports »

[an error occurred while processing this directive]
Superstitions aren't the only beliefs driving Canada's Little League team
Superstition is a big part of baseball and that's no different for Canada's Little League team ahead of a quarter-final bout against the powerhouse Japanese.
Profile Diver Celina Toth identifies with struggle, success of Roseline Filion video
Celina Toth has very fond memories when looking back at her first Summer Universiade two years ago Gwangju, South Korea. The 25-year-old won a gold medal in the women’s 10-metre synchronized diving event and finished just off the podium in fourth place in the individual event.
Opinion Time to put legislative teeth into the concussion debate
For concussion specialist Charles Tator, it is always easier to count the lives he didn't save: the deaths and disabilities are there for everyone to see. That's why Tator believes so strongly in having legislation to prevent deaths from brain injuries.
more »

Diversions »

[an error occurred while processing this directive]
more »