Such an open question on FB is bound to show selection effects. Better to do a straight poll:
I prefer to go to sleep [pollid:1134]
I prefer to wake up [pollid:1135]
I have to go to sleep [pollid:1136]
I have to wake [pollid:1137]
For comparison: http://www.frontiersin.org/files/Articles/93218/fneur-05-00081-HTML/image_m/fneur-05-00081-g001.jpg
Such an open question on FB is bound to show selection effects. Better to do a straight poll:
I prefer to go to sleep [pollid:1134]
I prefer to wake up [pollid:1135]
I have to go to sleep [pollid:1136]
I have to wake [pollid:1137]
For comparison: http://www.frontiersin.org/files/Articles/93218/fneur-05-00081-HTML/image_m/fneur-05-00081-g001.jpg