I made sure all my audio alarms and vibrations were turned off so I could measure whether the Sunrise Alarm alone would be able to wake me up. On the night before my experiment, I set the phone's alarm for 5:30 a.m.-about an hour before the actual sunrise was set to happen-crossed my fingers, and went to bed. Would I actually wake up on time using a sunrise alarm? It felt like a risky method, especially on days when oversleeping isn't an option, so I decided to conduct my experiment on a low-stakes morning. Skeptically intrigued by the prospect of retiring my shouty alarm clock, I decided to give the more natural method a try. Light-based alarm clocks can provide a gentle wake signal, to prepare the body for wakefulness.”-Alex Dimitriu, MD "Our circadian system is closely tuned to natural as well as artificial light. (Although cortisol has a bad rap as a "stress hormone," it's actually normal to have higher cortisol levels in the morning, as that's what wakes us ( and our libido) up.) At the same time, levels of sleep-inducing hormones like melatonin drop off, rousing us from sleep. Here's how it works, according to the National Sleep Foundation: When we're exposed to light in the morning, our brain prompts our body temperature to rise and our cortisol levels to increase. Light-based alarm clocks can provide a gentle wake signal, to prepare the body for wakefulness." "This make sense, as our circadian system is closely tuned to natural as well as artificial light. "There is some evidence that natural morning light can actually help prepare the body to wake up," he says. And according to Alex Dimitriu, MD, founder of Menlo Park Psychiatry & Sleep Medicine, sunrise alarm clocks can actually be effective because they tap into the body's innate biorhythms.
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