WHY SLEEP IS IMPORTANT TO THE BODY?

When you’re scrambling to meet the demands of modern life, cutting back on sleep can seem like the only answer. How else are you going to get through your never-ending to-do list or make time for a little fun? Sure, a solid eight hours sounds great, but who can afford to spend so much time sleeping? The truth is you can’t afford not to.

Sleep consists of a series of distinct cycles and stages that restore and refresh your body and mind. Even minimal sleep loss takes a toll on your mood, energy, efficiency, and ability to handle stress. If you want to feel your best, stay healthy, and perform up to your potential, sleep is a necessity, not a luxury. Learn what happens when you’re sleeping, how to determine your nightly sleep needs, and what you can do to bounce back from chronic sleep loss and get on a healthy sleep schedule.

Many of us want to sleep as little as possible—or feel like we have to. There are so many things that seem more interesting or important than getting a few more hours of sleep. But just as exercise and nutrition are essential for optimal health and happiness, so is sleep. The quality of your sleep directly affects the quality of your waking life, including your mental sharpness, productivity, emotional balance, creativity, physical vitality, and even your weight. No other activity delivers so many benefits with so little effort!

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 right). 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. 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.