How much sleep do you need?

Tired? We all know the feeling; irritable, groggy and exceptionally lazy. Chances are you didn't sleep enough last night... or the past few nights. But what exactly is "enough" sleep? And more importantly, can you ever "catch up" on it? AsapSCIENCE explores the science of sleep.

Answer the following questions:

1. What is sleep debt?

2. How does consistently sleeping less than 7 hours affect the body and brain?

3. What risks are involved with "too much" sleep?

Record a 1 minute video recommending this pill.