A trip to Mars involves all kinds of challenges for the human body. It would take over a year just to get there and back. How will astronauts' bodies cope in terms of sleep cycles?

It may seem reasonable to regularly swig a Red Bull if you're deployed in a war zone. You would expect them to help you stay alert. But drinking too many energy drinks may backfire.

The beeps, the zooms, the revs, the lumbering semis… Living near a busy highway often means little peace and quiet. But constant annoying traffic noise can affect health too.

The big test is tomorrow. Time for an all-nighter of cramming so you can be sure to ace it right? Wrong.

The list of ways sleep can affect a person's health is almost endless. Yet the quality and amount of sleep people get also affects their future.