It then waits till you fall asleep then starts the timer, waiting for you to get roughly 26.5 minutes of shuteye, before rousing you during a light sleep cycle.
ENGADGET: Jawbone Up review (2012): a reboot and a shot at redemption
Instead of making a loud noise at a predetermined time, the Smart Alarm gently vibrates when you're in a light sleep, somewhere around the time you'd like to wake up (up to 30 minutes before you've actually set it).
ENGADGET: Jawbone Up review (2012): a reboot and a shot at redemption
Light and quality of sleep are well-known to be linked, as anyone who has ever pulled a night shift will attest.
And then we let the Lake Placid Lodge do what it does best: another fine meal, another gibbous moon, another night to sleep by the light of the fireplace.
You see, researchers now know that blue-tinted light suppresses production of melatonin a hormone that makes it easier for us to go to sleep at night while red light does not (I wrote about the topic in a bit more detail here).
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Efforts to increase wakefulness in night-shift workers have focused on the use of light at night to suppress melatonin, a sleep-regulating hormone.
In one experiment, Oldis and another colleague named Marjorie Kaye had both entered REM sleep, when the program turned on the red light bulb cue for Oldis.
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In another experiment the researchers wake up sleeping mice by sending a light signal to the hypothalamus, the brain's controller of sleep-wake cycles.
So there we are, the grotesque grabbing on to beauty, beauty embraced by the grotesque, the light surrounded by the shadow, our lives rounded by a little sleep.
But during a light, long-haul flight, this production is inhibited, disrupting sleep, throwing the body completely out of sync and leading to jet lag.
When Woodside, California, mom Dana Sanderson asked her daughter Kit, then 6, what would help her sleep alone, Kit decided she needed a bigger night-light and a "Mommy pillow, " a body pillow with her mom's image traced in fabric paint.
If so, how much sleep do you get, and when do you turn off the light?
Blue light suppresses production of a brain chemical called melatonin, which helps us fall sleep.
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While the boat allows you to sleep in total comfort, the river cruise is far from adventure light.
Early light was just breaking, and they, too, must have been startled out of sleep.
At the end of the night, you tell it you're going to sleep by pressing and holding the lone button until the Up vibrates and the tiny moon-shaped light glows.
ENGADGET: Jawbone Up review (2012): a reboot and a shot at redemption
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