Light impacts the ticking of our internal clock — it tells our brain to be awake, while darkness signals that it’s time to sleep. That’s why screen time before bed can interfere with your sleep. “In ...

There’s nothing quite like that feeling of running a “first train” on a new model railroad. Although the scenery is still ...

There’s a reason we tend to feel sleepy around the same time each night — and why, if we don’t set an alarm, we tend to wake up at the same time in the mornings. As long as we’re not pulling ...