sort by best latest
The nature of your worlk will tell how many hours of sleep you need to cover everything your body needs not to be sleepy when you wake up.
You can help the HubPages community highlight top quality content by ranking this answer up or down.
That's probably due to lack of sleep or the inability to sleep soundly.
Copyright © 2017 HubPages Inc. and respective owners. Other product and company names shown may be trademarks of their respective owners. HubPages® is a registered Service Mark of HubPages, Inc. HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.
Copyright © 2017 HubPages Inc. and respective owners.