Increased light exposure can have positive and negative effects on your health — depending on the time of day.

Without an alarm clock set for school, sleep routines are anything but routine right now in many homes.

Before ringing in the new decade, a quick look back at the blog’s most read stories of the year.

The CEO of Facebook designed a device to help his wife sleep better after having children.

The latest gadgetry designed to analyze your sleep has limits, experts say.