weight loss health logo

 weight loss logo 2

 

About   |   Contact Us   |   Privacy Policy   |   Advertising   |    Shopping   |   Links  |   Blog  |   Disclaimer

 
 

weight loss subscription

weight loss magazine

 
 
  

 

magazine cover

 

  Recommended Books

 

Gordon Ramsay's Fast Food

 

Throw out the frozen dinners and takeout menus. Who better to show readers how to cook real food, real fast and make it really tasty than Gordon Ramsey, three-star chef and TV celebrity?  More.

 

 

    

 

 

 

 

 Weight Loss

Searching for a good carbohydrate!

Feelings, not food drive eating disorders

Australians and low carb diets - a national concern

Weigh Up the Evidence on Fad Diets

 Nutrition

Trouble sleeping? Why milk may help.

Beauty foods to improve appearance

Food - a powerhouse of protection from cancer

Trans fats - why they are bad for us

 Women

Finding jeans for your body shape

How to help him stop snoring!

What your mother didn't tell you about menopause

How to love your skin

 Pregnancy & Kids

Set up your baby's nutrition for life!

Stop the spread of school germs this winter!

Communicating with a newborn

Milk matters - Calcium for kids

 Fitness

Set up a home gym for less than $100

Beginner's guide to getting fit

Exercises for a tummy tone up

Save $$$, tips for buying exercise gear

 This Week's Recipe

 

 Weight Loss Tip

 

 Features

apple for weight loss

 

Buyers guide for succulent apples

sprouts for weight loss

 

5 Quick ways with Brussels sprouts

shopping ticket

 

Discount food shopping guide

 
 
weight loss bar
healthy woman

weight loss button  Weigh up the evidence on fad diets!

Use these seven keys to ensure you don't fall foul of a fad diet. More...

weight loss button  Crunched for time?

Try these quick and easy, healthy breakfasts to put zing into the start of your day.  More...

weight loss button  Are you kind to your behind?

With so much computer sitting, this video will show you how to avoid pain, and tone up at your desk. Breaking the Sedentary Lifestyle ...

 

< Health Home Page

Why Do We Need Sleep?

 

sleeperAlthough scientists are still trying to learn exactly why people need sleep, animal studies show that sleep is necessary for survival. For example, while rats normally live for two to three years, those deprived of REM sleep survive only about 5 weeks on average, and rats deprived of all sleep stages live only about 3 weeks.

Sleep-deprived rats also develop abnormally low body temperatures and sores on their tail and paws. The sores may develop because the rats' immune systems become impaired. Some studies suggest that sleep deprivation affects the immune system in detrimental ways.

Sleep appears necessary for our nervous systems to work properly. Too little sleep leaves us drowsy and unable to concentrate the next day. It also leads to impaired memory and physical performance and reduced ability to carry out math calculations. If sleep deprivation continues, hallucinations and mood swings may develop.

Some experts believe sleep gives neurons used while we are awake a chance to shut down and repair themselves. Without sleep, neurons may become so depleted in energy or so polluted with by-products of normal cellular activities that they begin to malfunction. Sleep also may give the brain a chance to exercise important neuronal connections that might otherwise deteriorate from lack of activity.

Deep sleep coincides with the release of growth hormone in children and young adults. Many of the body's cells also show increased production and reduced breakdown of proteins during deep sleep. Since proteins are the building blocks needed for cell growth and for repair of damage from factors like stress and ultraviolet rays, deep sleep may truly be "beauty sleep."

Activity in parts of the brain that control emotions, decision-making processes, and social interactions is drastically reduced during deep sleep, suggesting that this type of sleep may help people maintain optimal emotional and social functioning while they are awake. A study in rats also showed that certain nerve-signaling patterns which the rats generated during the day were repeated during deep sleep. This pattern repetition may help encode memories and improve learning.

 

Related Articles:

Part 1: What Happens When You Sleep?

Part 2: The Different Stages of Sleep

Part 3: REM Sleep

 

Source: National Institute of Neurological Disorders and Stroke

 

 

 

 

 < Health Home Page

< Visit Our Archives!

 

 

Please note Weight Loss Health is not a medical advice service - consult your health practitioner for specific advice.

No reproduction, transmission or display is permitted without the express written permission of Beardsmore Investments.

Copyright (c) Beardsmore Investments