But what time should you go to bed to make sure you sleep well throughout the night? Enter the time you’d like to wake up in our tool below and, based on 90-minute sleep cycles, we can tell you ...

Sleep physicians often hear their patients complain that they often feel awake at night but tired in the morning. Here’s how ...

Your child's bed time should also be informed by the time they tend to wake up, or need to wake up for school. So for example, the above chart suggests that children aged five should go to bed ...

Staff Writers Molly Hanley and Rania Woodward hash out whether napping is truly the best to way deal with afternoon ...

Researchers believe the most likely explanation is that morning people go to bed earlier, meaning they skip potentially distracting night-time activities. Meanwhile, Harvard biologist Christoph ...