What's great about this device is that it mimics such a beautiful sunrise that gradually prepares your body for a more gentle and refreshing wake-up experience. When I tested the Philips SmartSleep Wake-Up Light for our best sunrise alarm guide, I experienced reduced sleep inertia and enhanced mood in the first couple of nights using it. A similar study found that exposure to the same type of artificial light had a positive effect on individuals' cognitive performance, well-being, and mood. A research study found that symptoms of sleep inertia had decreased in people who were exposed to an artificial dawn signal in the morning. Fortunately, there are some solutions to reduce those unpleasant episodes. If for some reason you're unable to wake up to natural sunlight (for example, if you sleep with blackout curtains, like me) you're most likely waking up to the jarring sound of an alarm, often resulting in sleep inertia. The rising sun in the morning triggers the production of cortisol as we're gradually exposed to its natural light - this serves as a natural indicator to our biological clock to shift from being asleep to awake. In addition to good sleep habits, one good solution to wake up feeling more refreshed and in a better mood is by reducing those sudden awakenings. In sleep science, we refer to this as " sleep inertia." This temporary physiological state is the result of an abrupt awakening that interferes with the natural transition from sleep to wakefulness. Waking up to a blaring alarm can be a startling experience that provokes confusion, grogginess, and irritability.
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