It's usually shrugged off as if it were unimportant, but not sleeping well or getting enough sleep can cause major implications in your everyday life. If you miss a day (or night rather) of sleep once, there is no real problem, as most healthy people can easily catch up within days. If you go to bed late, are drunk or have all kinds of things going through your head, you may sleep but not get the mental rest you need. Again, no real cause for anxiety, as long as it's isolated incidents and not reoccurring.
If you wake up in the morning with a headache on a regular base, wake up in the middle of the night every time you hit the bed, or fall asleep in the midst of the day, a sleep study may be necessary. While we know a lot about sleep already, there is still a lot to learn as well. We are all individuals that have our own needs when it comes to sleep. Some people do perfectly well on 5 or 6 hours of sleep, while others can sleep 9 hours and still feel tired.
One thing is clear though: sleep is necessary to revitalize the body and mind in order to keep it going during our awake time. If you're experiencing trouble sleeping, talk to your doctor or contact a sleep disorder center where you'll be monitored while sleeping. The professionals then have a detailed view of what happens in your sleep and more important, they can also pinpoint the cause that interrupts your sleeping cycles.
After conducting the sleep study, therapy can be started and this could be as simple as changing a bad habit that wrecks havoc on your sleeping pattern or developing sound sleeping practices. Remember that in order to lead a healthy life you need to recharge the batteries with sound sleep. Yes, that tiny portion of the 24 hours a day consists of counts for more than you may realize!