Scientists have found out that night owls can work longer and be more alert late at night. As simple as that.
Researchers found that in tests those who consider themselves more alert in the morning can concentrate for less time than those who work best at night.
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The results, reported in the journal Science, suggest that night owls generally outlast early birds in the length of time they can be awake before becoming mentally fatigued.
References:
Night owls can work longer than early birds, scientists find [Telegraph]
Schmidt C, Collette F, Leclercq Y, Sterpenich V, Vandewalle G, Berthomier P, Berthomier C, Phillips C, Tinguely G, Darsaud A, Gais S, Schabus M, Desseilles M, Dang-Vu TT, Salmon E, Balteau E, Degueldre C, Luxen A, Maquet P, Cajochen C, Peigneux P. Homeostatic sleep pressure and responses to sustained attention in the suprachiasmatic area. Science. 2009 Apr 24;324(5926):516-9. [PubMed][Science]