California resident Bill Dubey recently hit the century mark. He says an active lifestyle, which incorporates an early start to the day, has been critical to his longevity.

Enter the time you’d like to wake up in our tool below and, based on 90-minute sleep cycles, we can tell you the best times to go to bed to wake up feeling fresh. We’re used to hearing that we ...

A study published in the Journal of Personality and Social Psychology found that people who wake up at this time are often ...