Exercising on Hot Days

“Laughter is as good as jogging for our heart, lungs, and brain” - unknown

Exercising in hot weather can be dangerous for your and your dog.

Pets need exercise, but on very hot days it is best to limit walks or exercise to early morning or evening hours when it’s cooler. Hot asphalt and beach sand can burn pet paws. Pets can get sunburned too, and may require sunscreen on their nose and ear tips.

With people, heat exhaustion, heat stroke, and dehydration are real possibilities when the temperature is greater than 70 degrees with humidity of 70% and above. High humidity means sweat doesn't evaporate very well because the air is already saturated with moisture. So you're losing fluids but not cooling down.

1. Stay hydrated. Take a drink every 15 minutes when exercising and consider a sports drink like Gatorade to replace lost salts and electrolytes.

2. Avoid the peak heat between 10am and 3pm.

3. Dress in light, comfortable clothes in light colors

4. Know the symptoms of heat illness: headache, nausea, dizziness, and light-headedness. Stop your fitness workout routine immediately, start replacing fluid, and find shade or spray your body with cool water.
Signs of heat stroke include confusion, rapid pulse, difficultly breathing, and dry skin with no sweat. If you suspect heat stroke, it's important to seek medical attention immediately as this can be a life threatening.

5. Wear sunscreen.

6. Cut yourself a little slack on extra hot days. This is NOT the time to maximize your workout. The good news is that you’ll be burning extra calories just coping with the heat.

7. When the temperature hits 80 with humidity consider moving your workout to an air-conditioned mall or gym. An increase in your body’s core temperature reduces the endurance capacity of your muscles.

8. If you insist on working out outdoors, build up to it slowly with short workouts in the heat for two weeks before your body is ready for the full routine.

9. Train with other people when it’s extra hot. Remember confusion is a symptom of heat stroke so a friend may notice if you’re in trouble, even if you don’t.

Bottom Line

If you live in a city, high heat can also mean poor air quality with ozone or smog. Long term exposure to smog can reduce the immune system's ability to fight off respiratory infections and can damage lung cells.

See Also
http://www.hss.edu/conditions_14593.asp/
www.50plus.com/Health/Fitness/index.cfm?documentID=21577
www.bukisa.com/articles/84831_how-to-exercise-in-hot-weather

Sunburn

“Even if you've been fishing for 3 hours and haven't gotten anything except poison ivy and sunburn, you're still better off than the worm”

I’m not a summer person or a beach person because I do not tan easily. I burn.

Sunburn is caused by UV-radiation emitted by the sun. Since UV rays damage the DNA in skin cells, the body tries to defend itself by making the skin darker (i.e. tanning) to block or absorb the rays safely. UV related skin damage has been linked to skin cancer and doctors are seeing a cancer spike in tan-seeking youth.

Snow and light-colored sand reflect UV light and increase sunburn risk. In these situations, UV rays may reach exposed skin from both above and below. Even on cloudy days, UV radiation reaches the earth. [CDC] Injury can start within 30 minutes of exposure so always use an effective sunscreen with a SPF of at least 15. And don’t skimp on applying the sunscreen. Dermatologists prescribe the equivalent of a shot-glassful every single time you slather up-and a reslathering every two hours. Wear dark color clothes with a tight weave (ugh, heat!). Wear a hat and sunglasses to protect the eyes.

In an ironic twist, some recent research blames sunscreen for a rise in skin cancer. The argument goes like this: Sunscreen (SPF factor) blocks UV-B rays which cause sunburn and generate vitamin D in the body. Most sunscreens do not block UV-A rays which penetrate further and cause tanning and skin cancer and wrinkles. Hence many individuals, protected by sunscreen from burning, are staying out longer and overdosing on UV-A rays.

If, like me, you forget the sunscreen and get sunburned, here are some suggestions:

• take a cool (not cold) shower or bath immediately
• apply cool towels to the burn area for several hours to take away the heat
• symptoms usually start about 4 hours after sun exposure, worsen in 24-36 hours, and resolve in 3-5 days
• consume extra fluids for the next 2 or 3 days
• take ibuprofen, acetaminophen or (adults only) aspirin, if needed, to relieve the pain
• re-moisturize your skin with moisturizing cream, aloe, or 1% hydrocortisone cream (see Dr before using cream on children under age two).
• There is little you can do to stop skin from peeling after a sunburn-it is part of the healing process. Lotion may help relieve the itching.
• When you go out, cover the burned area with clothing so you don’t make it worse

When to visit a doctor for a sunburn:

• the skin blisters
• the pain is extreme or lasts more than two days
• your face swells
• the burn covers a large portion of the body (15%)
• you get a fever or chills
• you have a headache or feel faint
• you become dehydrated (dry eyes and mouth)
• your skin become infected

Bottom Line

Sunscreen is only a temporary protection from UVB rays. Most need to be reapplied every few hours and don’t skimp on the amount you use. Check the instructions.
Look for sunscreens with protection from UVA rays.

Practical Survival Skills

"We cannot think too highly of nature, nor too humbly of ourselves"
- Charles Caleb Colton (1780-1832)

The blog Code Name Insight has been publishing practical survival tips the past month:

"The survival skills I am talking about here are not the go out into the wilderness and live off the land survival skills. Although these skills are extremely valuable, this first series will focus on general survival skills that the majority of the population will be able to use."

Survival Skill #1--Find Stuff
Ideas for surviving without money include Dumpster diving, Beachcombing, finding items tossed and along the road.

Survival Skill #2 Ask for Stuff

"Kids and panhandlers are good at this because they have very limited resources, so they ask and ask and ask. If someone says "no" they will ask someone else"

"Be known as a person who always has a good home for unwanted things."

Survival Skill #3 Fix Stuff

"For those on the edges of society (ie: low on cash but with ample time and creativity) throwing something out because it doesn't work or you don't like it isn't an option."

Get Close to Nature - 10 Ways We Are Disconnected From Nature

• Most people "cannot provide the most basic food stuffs for themselves."
• "Nature is reality"
• "Living close to nature requires a wide variety of skills"
• "Nature is anything but dependable which means that people learn how to be flexible."

Survival Skill #4 Make Stuff

Food, Furniture, Jewelry, Clothing, Medicine, etc.

Bottom Line

Today we experience the world through computers, video games, VCRs, and channel TV. Many of us have lost touch with the "real world" and would suffer withdrawal shock if required to live without electricity. Go outside, get your hands dirty, rediscover life outdoors.

The Importance of Shelter

All architecture is shelter, all great architecture is the design of space that contains, cuddles, exalts, or stimulates the persons in that space. -Philip Johnson

Unless you're an expert breath holder, most people have no problem accepting the 1st Survival Rule of Three - find air within 3 minutes. However I've seen lots of misunderstanding over the second Rule of Three - find shelter within 3 hours. One commenter on a different blog pointed out that he frequently spends more than 3 hours at the beach with no difficulty.

However, the beach goer did have shelter - if the sun became too hot he could retire to his car or his house. When far from civilization, you should establish a shelter within the first few hours to keep dry or become dry, to stay out of the wind, and to find warmth or shade BEFORE weather conditions turn fatal. For hikers, shelter may be a tent they carry on their backs. It could be your car, a cave, a cabin, etc. Here are some links on creating your own emergency shelter:

http://www.abc-of-hiking.com/hiking-tents/outdoor-shelters.asp
http://en.wikibooks.org/wiki/Outdoor_Survival/Shelter
http://www.essortment.com/all/howdoyoumake_rkdt.htm
http://outdoorsurvival.org/quick-emergency-shelter

Bottom Line

Provide a shelter BEFORE you need it. While a shelter may be a place to keep "your stuff" (George Carlin) its real value is to maintain your body temperature under adverse conditions - too much heat leads to heat stroke, too little heat causes hypothermia.

Tomorrow's topic will cover hypothermia.