Students who perform poorly in class now have another excuse: Their schedules may be out of sync from their body biorhythms. New research shows that body clocks have a big bearing on student ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

Generating music through your own electrical currents … and some apples. Pulse audio engineer Charlie Kaier is holding a gray box, about the size of a brick. It belongs to Joe Patitucci, a co-founder ...

The average length of a movie is 90 minutes. And that doesn't seem to be an accident. If you ask the experts on these things, they'll tell you that many of the functions of your body and brain are set ...

Last time, I discussed, in a very superficial way, the concept of circadian rhythms, such as being hungry or sleepy at different times of the day. And I mentioned how these genuine circadian rhythms ...

We humans, like all other animals, live in a world that is marked most basically and most invariably by cycles of day and night. This external fact of life has its counterpart in our bodies; somewhere ...

You know a theory is janky when even its Wikipedia page has “(pseudoscience)” in its title. That’s the case with so-called “biorhythms,” or periods of 23, 28, and 33 days that supposedly predict how ...