sleep

New technologies would seriously damage sleep. In any case, it is the conclusion of a number of studies devoted in recent years to the effects of the use of mobile phones or the Internet on health . Taking the opposite of this assertion, high-tech manufacturers have yet developed a number of tools recently supposed to make our nights more beautiful.

The day and the night

First of the kind, the “wakeful awakenings ” thus invaded the stores several years ago. Replacing the thunderous radio alarm clock, they allow a progressive sleep as well as a softer end of night imitating the light of day. These dawn simulators also have scientific virtues. “This type of light increases the serotonin responsible for good mood,” says Michèle Freud, sophrologist and author of Reconcile with sleep .

“The dawn simulators are beneficial because falling asleep and waking up depend on the biological clock, itself synchronized by the light essentially,” confirms Dr. Joëlle Adrien, neurobiologist and research director at Inserm . But still, do not turn your back on the bedside table … “she nuanced, to better recall the importance of exposing oneself to the (real) daylight in the morning.

The “right time” to wake up

In the quest for the perfect night, digital sand merchants have also developed interesting tools. On Android and iPhone, applications have been offering for several years already valuable advice to sleep on both ears. But the best of them, such as Sleep Cycle or Sleep Time , go even further by analyzing your sleep cycles, thanks to the recording of noise disturbances that disturb your nights and the accelerometer, which measures your nocturnal movements. .

They also promise you to wake up at the right time based on these phases of sleep. Simply indicate a range of several minutes when you want to wake up, and the alarm on your phone finds the perfect timing to ring. A solution “ideal for good sleepers”, but that Dr. Adrien advises the ” good third of people who do not sleep enough .” Because a good night is not just a matter of cycles, she recalls: “When we do not have a good sleep, it is worthwhile to sleep fifteen minutes more …”

Light or vibration?

Riding the success of apps, engineers have in any case pushed the concept further by inventing sophisticated tools such as sensors, masks or smart bracelets. Once around your wrist, Jawbone Up measures the micromotion you make in your sleep. Then simply connect the bracelet to your smartphone to view all the data of your night: the time spent in bed, the time you put to sleep, the number of times you woke up …

And like the apps, this bracelet offers to wake you up. With one difference: this time, it is a slight vibration that will get you out of the arms of Morpheus. A small detail that embarrasses Michèle Freud. “For hypersensitive people, a kinesthetic awakening is not necessarily ideal because it can generate stress,” she says. This bracelet is not for everyone. “

For them, “better to prefer the light,” she continues. The latest of alarm clocks 2.0, Aura from Withings presents itself as an ideal remedy. Besides the variety of lights it offers, it is a synthesis of all existing gadgets. Radio touch, alarm clock according to your sleep phases, it also records your body movements, your heart rate and your breathing cycles via a sensor slipped under your mattress, while another device analyzes your environment (surrounding noise, room temperature, brightness). For coffee, however, you will have to get up.

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