Study researcher Renee Biss, a graduate student at the University of Toronto, said one of the reasons morning people may be happier is because they tend not to sufferfrom social jetlag.
At the moment, Ptacek sees his research having the most direct applications for those who sufferfrom night eating disorder, difficulty with jetlag, and the problems associated with working graveyard shifts.
Travel like this can be exhausting, and I sufferfrom all the typical air warrior ills: constant tinnitus, frequent sinusitis, dry eyes, jetlag and a bad back.