Study Catching Up On Sleep Deceptive

01.14.10 | FL News Team

New research from the Harvard Medical School shows sleep-deprived people who finally catch up on sleep may feel normal when they wake up, but their ability to function drastically fades later in the day. The study highlights the deceptive illusion that catching up on sleep makes a person completely functional. Research indicates that a human's daily circadian rhythm disguises the affects of sleep lost, giving a person new energy from 3 p.m. to 7 p.m. But after that the ability to be attentive plummets. The study found that with long-term chronic sleep loss over weeks at a time a person's performance declines for each hour a person is awake, especially from 3 a.m to 7 a.m. The study appeared in Wednesday's "Science Translational Medicine" journal.