<<In modern life, people often deprive themselves of sleep<http://us.rd.yahoo.com/dailynews/livescience/sc_livescience/storytext/emotionsrunamokinsleepdeprivedbrains/24915165/SIG=127c1sb4q/*http://www.livescience.com/humanbiology/060323_sleep_deprivation.html>"almost on a daily basis," Walker said. "Alarm bells should be ringing about that behavior—no pun intended.">>
