CNN AC 360 Later December 4, 2013 03:04:00
>> let me bring in a sleep specialist, michael bruce author of "the sleep doctor's diet plan". can you explain, a, what does this sound like to you? this term nodding off, does that mean somebody's asleep? >> well, it can. and then again it may not. i think we're definitely in a realm of something that we're not 100% sure of that we can't understand here. what we do know, however, is that he was on a different shift approximately two days before he took on this shift. and what we're asking him to do is to change his entire circadian rhythm and move his entire body clock within a two days' peri...