Gadgets to help you sleep better: Do they work?

Many gadgets claim to promote better sleep. For example, white noise machines or noise-canceling earbuds may help someone fall asleep by masking unwanted sounds in the sleep environment. As another example, a sunrise alarm, which simulates the sun’s morning light, can be helpful for people with disorders of the sleep-wake cycle. Proven methods to improve sleep include cognitive behavioral therapy and good sleep hygiene, such as keeping the room dark and cool and avoiding electronic screens within two hours of bedtime.