The Lenovo Smart Clock also has a sunrise alarm clock feature, meaning the screen gets brighter 30 minutes before your scheduled wake-up time. One drawback of the Lenovo Smart Clock 2 is the ...
and wake-up-light alarm clocks are designed to simulate that effect, starting with a dim light that builds up to the brilliance of a bright spring day over the course of about 30 minutes.
If the clocks didn't go back ... us to "Try to fix your wake time so that you get out of bed and get 15 to 30 minutes of natural daylight as soon as you wake up. This will optimise your sleep ...