Screen time before bedtime disrupts your sleep, a new study says. I love the science of sleep.
People who receive a tablet or e-book reader for the holidays might wind up spending some sleepless nights because of their new gadget.
That’s because the light emitted by a tablet like an iPad can disrupt sleep if the device is used in the hours before bedtime, according to a new Harvard study.
People who read before bed using an iPad or similar "e-reader" device felt less sleepy and took longer to fall asleep than when they read a regular printed book, researchers found.