If you aren’t familiar with the concept of a wake-up light, the gist is that the light turns on and gradually brightens for 30 minutes prior to your alarm going off. This sunrise simulation usually won’t wake you up, but it will jog you out of deep sleep and get you ready to wake up, so you don’t feel like garbage for…
Source: io9 – Philips’ Best Wake-Up Light Just Got a Whole Lot Cheaper