After all, you can't be halfway through a movie at 10 p.m. if you refrained from starting it at 9 p.m. Sleep and darkness aren't the only things that set your body's circadian rhythms. Daytime ...

The Navy Seal Sleep Technique is actually only meant to help you achieve a super short, eight-10 minute nap. Of course, you can nap for longer than this, but if you intend to stay in the Navy SEAL ...

We’re sure you’ve heard it before, but both of these stimulants can cause havoc with your sleep. “Caffeine stays in your system long after you've had it (up to 8-10 hours),” says Fink.

This is achieved by “sleep restriction”, which cuts the time you spend in bed, and usually takes from two to eight weeks. Say you go to bed at 10 and get up at 7, “that’s 9 hours in bed ...

Working an alternate shift schedule can impact your sleep. Limiting caffeine, having a routine, and staying hydrated can help optimize your sleep. If you’re working overnight shifts, rotating ...