I slept 18 hours today, does that mean I only need 6 hours tomorrow?

Current Events

Current Events » I slept 18 hours today, does that mean I only need 6 hours tomorrow?
Instead of the recommended 11?
http://i.imgur.com/yCW15Zn.jpg
Whoever recommends 11 probably doesn't work
I am Mogar, God of Irony and The Devourer of Topics.
Sleeping more than 9 hours is detrimental
Less is more. Everything you want, isn't everything you need.
Means you do not get enough rest normally, and more then 10 hours of sleep is said to be bad for you.

I try to get 8-9 hours each day but most times it is only 7 hours.
doa-plus.com - We Press Forward. . . By Pressing Back.
Current Events » I slept 18 hours today, does that mean I only need 6 hours tomorrow?