This article caught my attention as I opened my browser to check my mails. I have problems on sleeping lately (especially I'm on a night shift) and I said to myself this could be a help so I checked it right away. This is a feature article in Yahoo! news and was taken from Time dot com and written by Laura Blue.
As quoted in the article:
"Q: How much sleep is ideal?
A: Studies show that people who sleep between 6.5 hours and 7.5 hours a night, as they report, live the longest. And people who sleep 8 hours or more, or less than 6.5 hours, they don't live quite as long. There is just as much risk associated with sleeping too long as with sleeping . The big surprise is that long sleep seems to start at 8 hours. Sleeping 8.5 hours might really be a little worse than sleeping five."
So they are saying the ideal number is 6.5 to 7.5 hours of sleep per night and sleeping less is preferable. I have no problem doing the latter as I always do that. Lol... One thing I would like to note, however, is that spending less time in bed actually makes sleep better. I hope this study is also correct when sleeping at daytime. Sigh...