- British Ministry of Defence researchers have been able to reset soldiers’ body clocks so they can go without rest for up to 36 hrs. Tiny optical fibres embedded in special spectacles project a ring of bright white light (with a spectrum identical to a sunrise) around the edge of soldiers’ retinas, fooling them into thinking they have just woken up. The system was first used on US pilots during the bombing of Kosovo.
- Because of the speed at which Earth moves around the Sun, it is impossible for a solar eclipse to last more than 7 minutes and 58 seconds
Seventeen hours of sustained wakefulness leads to a decrease in performance equivalent to a blood alcohol-level of 0.05%.
- There are over 25 million bubbles waiting to burst out of each bottle of Champagne
- It takes glass one million years to decompose, which means it never wears out and can be recycled an infinite amount of times
The NRMA estimates fatigue is involved in one in 6 fatal road accidents.
- The heat of peppers is rated on the the Scoville scale
Exposure to noise at night can suppress immune function even if the sleeper doesn’t wake. Unfamiliar noise, and noise during the first and last two hours of sleep, has the greatest disruptive effect on the sleep cycle.
- Gold is the only metal that doesn’t rust, even if it’s buried in the ground for thousands of years (Platinum and Palladium also do not oxidize at room temperature)
The “natural alarm clock” which enables some people to wake up more or less when they want to is caused by a burst of the stress hormone adrenocorticotropin. Researchers say this reflects an unconscious anticipation of the stress of waking up.
- Your tongue is the only muscle in your body that is attached at only one end
Some sleeping tablets, such as barbiturates suppress REM sleep, which can be harmful over a long period.
- If you stop getting thirsty, you need to drink more water. When a human body is
dehydrated, its thirst mechanism shuts off.
In insomnia following bereavement, sleeping pills can disrupt grieving.
- Each year 2,000,000 smokers either quit smoking or die of tobacco-related diseases.
Tiny luminous rays from a digital alarm clock can be enough to disrupt the sleep cycle even if you do not fully wake. The light turns off a “neural switch” in the brain, causing levels of a key sleep chemical to decline within minutes.
- The moon moves about two inches away from the Earth each year
To drop off we must cool off; body temperature and the brain’s sleep-wake cycle are closely linked. That’s why hot summer nights can cause a restless sleep. The blood flow mechanism that transfers core body heat to the skin works best between 18 and 30 degrees. But later in life, the comfort zone shrinks to between 23 and 25 degrees – one reason why older people have more sleep disorders
- Sleep Hacks: Tips for Getting Those Crucial 40 Winks (lifehack.org)
- How to Tune Up Your Circadian Rhythm For Spring (fitsugar.com)
- Why Mom Wakes Before Dad (livescience.com)
- The Sleep/Weight Loss Connection (psychologytoday.com)
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