How Much Sleep Do You Need?

How many hours of sleep do you need...?

  According to the National Institutes of Health, the average adult sleeps less than 7 hours per night. In today’s fast-paced society, 6 or 7 hours of sleep may sound pretty good. In reality, it’s a recipe for chronic sleep deprivation.
  While sleep requirements vary slightly from person to person, most healthy adults need between 7.5 to 9 hours of sleep per night to function at their best. Children and teens need even more (see box at top). And despite the notion that our sleep needs decrease with age, older people still need at least 7.5 to 8 hours of sleep. Since older adults often have trouble sleeping this long at night, daytime naps can help fill in the gap.

Sleep needs and peak performance

  There is a big difference between the amount of sleep you can get by on and the amount you need to function optimally. Just because you’re able to operate on 7 hours of sleep doesn’t mean you wouldn’t feel a lot better and get more done if you spent an extra hour or two in bed. The best way to figure out if you’re meeting your sleep needs is to evaluate how you feel as you go about your day. If you’re logging enough hours, you’ll feel energetic and alert all day long, from the moment you wake up until your regular bedtime.

Signs and symptoms of sleep deprivation and lack of sleep

  If you’re getting less than eight hours of sleep each night, chances are you’re sleep deprived. What’s more, you probably have no idea just how much lack of sleep is affecting you.

  How is it possible to be sleep deprived without knowing it? Most of the signs of sleep deprivation are much more subtle than falling face first into your dinner plate. Furthermore, if you’ve made a habit of skimping on sleep, you may not even remember what it feels like to be wide-awake, fully alert, and firing on all cylinders. It feels normal to get sleepy when you’re in a boring meeting, struggle through the afternoon slump, or doze off after dinner. But the truth is that it’s only “normal” if you’re sleep deprived.