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Do You Really Need 8 Hours of Sleep Every Night? Body Stuff with Dr. Jen Gunter

If your answers are yes to all three questions below, you probably don't need to worry about your sleep.

Do I feel reasonably well-rested during the day?

Do I generally sleep through the night without disturbances?

Or, if I wake, do I fall back asleep easily?

Can I stay awake through the day without involuntarily falling asleep?

If your answers are yes to all three, you probably don't need to worry about your sleep.

When you can't sleep, you're desperate for help. And there's a booming industry waiting to tell you all the ways a lack of sleep can ruin your health -- and to sell you fancy gadgets to help you finally doze off. 

Shedding light on this flawed doomsday messaging, Dr. Jen Gunter explains why you shouldn't lose sleep over sleep -- and what to do instead.

Think you know how your body works? Think again! In this TED original series, Dr. Jen Gunter will share the truth about what's really going on inside you.