Although many of us get sleepier in the autumn and winter and want to spend more time in bed, Juris Svaža, an associate professor at Rīga Stradiņš University (RSU) and the Head of the Sleep Laboratory at the RSU Institute of Stomatology, believes that the darker seasons should not affect our need for sleep. Svaža notes that 7 - 7,5 hours of sleep are enough for most of us.